Author: Hrothsige Frithowulf

  • Great Depression: Stock Market Crash of 1929, Black Thursday

    Great Depression: Stock Market Crash of 1929, Black Thursday

    The crisis of 1929, which began with a stock market fall on Wall Street on Thursday, October 24, 1929, had far-reaching and dramatic effects, eventually giving rise to the Great Depression. The United States had an unprecedented economic expansion in the years after World War I. Nobody could have foreseen that one day on Wall Street would lead to one of the worst economic disasters in American history. The global economic collapse began on 1929’s “Black Thursday” and continued until World War II. During a ten-year economic downturn, nations like Germany and the United States saw significant social and political turmoil, including the emergence of a certain dictator, Adolf Hitler.

    There was a dramatic increase in joblessness since so many banks and enterprises failed. There were 7 million unemployed in two years in the United States. When the Great Depression was at its worst in 1933 nearly half of the banks had collapsed and unemployment had risen to over 15 million. Under Franklin D. Roosevelt’s New Deal economic and social policy, the U.S. economy began to show signs of improvement in 1933 and continued to improve over the next several years. The international economic crisis of 1929 was the worst of its kind in the 20th century. Its devastating effects lasted for a full decade and played a significant role in setting the stage for World War II.

    Where Did 1929’s Economic Collapse Come From?

    The Great Depression of the 1930s was the worst economic downturn the capitalist system had ever seen. It started off in the middle of the optimism caused by the speedy recovery from World War I. In the decade after World War I, both global output and international commerce hit record highs. With the exception of the Soviet Union, every country’s postwar economy was building on the economic liberalism (universal return to the gold standard) that had made Europe prosperous in the 19th century. The magnitude of technological advancement and the fruition of rationalization strategies also had a role in bolstering people’s faith.

    After years of economic depression, the United States underwent a period of rapid rebuilding in the 1920s. However, there were several holes in the American system. It was founded not just on industrial overproduction, but also on stock market speculation and easy access to financing. In order to finance their stock market investments, the general public took out excessive loans. This means that when prices dropped, investors acted quickly to liquidate their holdings before they lost too much money.

    The United States had robust expansion in the 1920s, resulting in a roughly 50 percent rise in industrial output. Contrarily, speculators who ignored economic realities drove up New York Stock Exchange values by more than 300 percent over the same time period. Not only that, but neither production nor earnings have increased to match the elevated mood.

    The ingredients for the impending catastrophe were quickly brought together: investors stop looking to collect dividends on profits, the fruits of real growth, and instead bought securities in large quantities on credit with the sole objective of selling them as quickly as possible for as much profit as possible. The stock market collapse was imminent since the foundations were being trampled.

    “Black Thursday,” the panicked selling of approximately 13 million stocks on Wall Street on October 24, 1929, was a catastrophic event. As a result of the stock market crash, the American economy as a whole plummeted at a dizzying velocity. Investors abandoned industries, and consumer spending was continually on the decline.

    The value of agricultural commodities also fell, prolonging a crisis that persisted for years. In response to the insolvency of their shareholders, the banks filed for bankruptcy protection one after another. With this, the Great Depression officially began.

    Early Warnings on the Impending Crash

    Charles Merrill Great Depression
    Charles Merrill

    Charles Merrill, the founder of the business that would become Merrill Lynch, warned investors in 1928 to stop purchasing stock on credit. In the end, nothing came of this first warning. Unfortunately, the economy started to slow down significantly in early 1929, with the car industry being particularly hard hit. Overall, industrial output dropped by around seven percent in the first three months of the year. Simply said, all the money had been sucked up by stock market speculation, and the “real economy” was no longer receiving any funding as a result.

    That stock prices nonetheless increased by more than 100% over the same time was a testament to the unrelenting blindness of financial operators. There were cash flow problems and a lack of readjustment to reality. After being steadily fed for months, the stock market finally declined in September and keep steadily declining since the beginning of October.

    Since they weren’t seeing any further growth, the large players were cashing out in more alarming numbers between October 18 and 23. The only catch was that no one was willing to repurchase grossly overvalued stock unless they were certain of a massive profit in the very near future. The worst possible outcome was inevitable.

    Black Thursday, the Day the Market Crashed (October 24)

    The New York Stock Exchange street during the crash in 1929 Great Depression.
    The New York Stock Exchange street during the crash in 1929 Great Depression.

    The next day, Thursday, October 24, 1929, was the first day of absolute panic: no one wanted to acquire any more shares, and all the main operators were in a selling position; the whole collapse of the prices, -22% at midday, a tragic record had just been made. The reports of widespread suicides among traders were first refuted. But the news cameras were there. An investor woman jumped off the 40th floor of the Equitable Building. Two men with a joint bank account held hands and jumped out of the 10th-floor window of a hotel. Meanwhile, as the telegraphers tapped the news of the collapse, many people had heart attacks.

    Nonetheless, the widespread fear caused banks to repurchase a large number of shares (13 million sales against a usual average of 2.5 million), driving up the price of the stock. Even though the trade volume was over the roof, they were able to keep the loss to less than 2% at the end of the day. Prices didn’t change for the following two days. But this was just a temporary respite; “investors,” or should we say “Russian roulette players,” had used all of their credit to speculate, and now they had to sell to cut their losses before the market plunges any worse in the near future. On Monday, October 28th, prices dropped again, and this time, banks did not act to stabilize the market. The Dow Jones dropped by a record 13% in a single day and another 12% the next day.


    “Who Else Had Any Money Left?”

    12,894,650 shares were sold as a result of the falling prices in October 24. The daily average of the previous month was 4 million. Prices fell non-stop on Friday and Saturday. On Sunday, newspapers reported that the worst moments of the crash were over and things would improve the following week. However, shares began to fall again on Monday, and it became clear on Tuesday that the worst had not yet happened. On October 29, 1929 (“Black Tuesday”), about 16.5 million shares were sold. There were no shares left to sell, and in a single day, $14 million was gone from earnings on paper.

    A young man who used to run an errand here ordered and bought one block of shares for 1 dollar, which was valued at $100,000 six days ago. Despite the dominant despair, those who were reassured were still absent. John D. Rockefeller, an oil multi-millionaire, proudly stated that he and his family bought trustworthy bills. On the other hand, the comedian Eddie Cantor, who had lost everything in the crash, could not stand what Rockefeller told, and said: “Sure, who else had any money left?


    Over the course of the next several weeks, ten times the size of the United States federal budget disappeared into thin air. The US industrial production index dropped to 48.7 in July 1932 from 100 in 1929; the drama of agriculture was spectacularly manifested by the collapse of the price of cotton (1929: 17.65 cents; 1933: 6 cents) and wheat (1920: 98 cents; 1933: 40 cents); the banking crisis peaked at the beginning of 1933, when all banks closed down after a general moratorium was declared.

    What Repercussions Did the Great Depression Have on a Global Scale?

    Great Depression and public help for needy people

    In the 1930s, the Great Depression or Great Recession hit the United States after the stock market crash of 1929. Because other economies were more reliant on American dominance, it eventually extended worldwide. The USSR was the only nation to avoid being swept up in the 1929 crisis because of its uncompromising communist doctrine.

    The 1929 crisis quickly spread from the United States to Latin America (1929–1930), Austria (with the collapse of the Credit Anstalt on May 11, 1931), Germany (where American capital had been abruptly repatriated), Great Britain and the Commonwealth, and, finally, more slowly but more permanently, to France (1932).

    All throughout the world, unemployment rates reached all-time highs. Because of his promises to restore Germany’s economy, Hitler was able to rise to power. Currency devaluations and a more protectionist policy than ever before were among the other measures used by leaders in an effort to reverse their nations’ downward trends. The Great Depression finally ended after a tumultuous decade when World War II broke out.

    The Financial Crisis Turned Into Economic Crisis

    Companies who wanted to invest in their own growth but couldn’t because of the economic downturn that followed the financial crisis were affected hard. Personal spending was falling drastically. Banks were cornered into cutting off firms’ access to credit, further weakening the companies and leading to more bankruptcies. It was a never-ending cycle: when people stopped getting their money back, the weakest banks went down, and then tiny savers attempted to protect their money by pulling it out of the remaining institutions. This caused a crisis in the financial industry.

    Unemployment skyrocketed as a direct result of the 1929 crisis, which included the combined effects of the financial, economic, and banking sectors collapsing; this was the social crisis, which rounded out the dismal picture. However, these were not the only costs of this organized self-destruction; the crisis of 1929 was also responsible for the unanticipated strengthening of authoritarian regimes and the inward retreat of nations (protectionist policies).

    As a result, international commerce plummeted by a shocking 66.7% between 1929 and 1933. Britain’s devaluation of the pound sterling in 1931 set off a domino effect throughout Europe. Joblessness skyrocketed. In order to combat unemployment and foster corporate recovery, President Roosevelt’s administration instituted the New Deal in March of 1933. This enshrined governmental involvement in the United States, which had previously been a bastion of liberalism.

    France and Germany’s Repercussions After the Great Depression of 1929

    France didn’t seem to be affected by the global crisis that began in October 1929 with the collapse of the New York stock market until the autumn of 1931. But when Britain finally gave up on the gold standard in September 1931 and allowed the pound sterling to float on the foreign currency markets, disaster ensued. French exporters were hurt severely by this action, which amounted to re-exporting the crisis to continental Europe, since the British pound lost 30 percent of its value in a matter of weeks. British and American devaluations exacerbated the gap between French and international prices as the government stubbornly refused to discount the franc, despite the advise of experts like Paul Reynaud.

    Thus, although other nations were beginning to see signs of recovery by the end of 1933, the French crisis deepened in 1934 and 1935, and the French cabinet’s attempt at deflation ultimately failed. The Popular Front’s election success in May 1936 was meant to symbolize the French people’s unification behind the dirigiste movement that was gaining momentum across the world. Franc devaluation occurred in October 1936, but France did not emerge from its economic crisis until the outbreak of World War II in 1939.

    Even worse were the repercussions in Germany, where millions of unemployed and impoverished middle-class people helped propel Hitler to power in January 1933 when the Weimar Republic collapsed. The National Socialist regime quickly alleviated the crisis by instituting a strict dirigiste and autarkic policy, as well as a massive public works (freeway) and armaments program, which drastically reduced unemployment. Fascist Italy also resorted to these tactics.

    Confidence had been lost across the free world, economic barriers had been put up amid more mistrust than ever, and in order to forget their sorrow, people had once again turned to the tranquilizers of bellicose nationalism. However, the issue was never completely resolved, and as a result, its effects brought to the Second World War.

    For What Did the New Deal Want to Accomplish?

    Franklin Delano Roosevelt, the man elected president of the United States in 1932, instituted the New Deal. Reorganizing the banking system, abandoning the gold standard, devaluing the dollar, regulating agricultural production, providing social and economic aid, and launching massive projects to combat unemployment were all part of the “new deal” policy that was implemented in response to the economic crisis.

    The previously pursued capitalist agenda veered off in a new direction as governmental involvement trumped liberalism. A seemingly robust economic structure, but one with shaky underpinnings, ultimately led to the 1929 crash. The globe was rocked for a decade by one day that revealed the flaws of American liberal capitalism. Nazism was gaining strength as several other countries were seeking to develop at the same time. The world was soon be plunged into World War II.

    Investment by Borrowing

    When Wall Street’s crash of 1929 led to Black Thursday and the Great Depression, it was the worst economic downturn in the history of the industrialized world. The daily routine had begun as usual at this stock exchange building, which was the world’s largest money market on Wall Street in New York. But stockbrokers were frustrated. Over the past few weeks, both prices and the general mood fluctuated between optimism and fear.

    Throughout the 1920s, Americans spent recklessly on securities and stocks. Credit was unlimited for a wide range of purchases. The frenzy of playing with stocks was largely supported by the debts given by intermediaries because everyone believed heartily that the constant rise in values would secure their investments.

    However, as it was nearing the end of the decade, it became clear that a heavy price would be paid. By mid-October 1929, prices had suddenly dropped, so that thousands of stockholders, whose wealth was only on paper, had to sell all their investments.

    The selling craze launched by panicked investors that would go down in history as “Black Thursday” shocked the foundations of the US stock market. On Thursday, October 24, at 11 o’clock, that was, exactly one hour after the opening time, the stock market was alarmed. Investors, who bought shares from various companies that are said to have risen, gave sales orders to their brokers; no matter how much, sometimes even at the expense of nothing…

    The New York Times reported excitedly: “Fear struck… People threw their stocks away regardless of what they yielded.” On the morning of the bubble burst, investors who had a fortune on paper were wiped out. Everyone was fighting wildly on the stock market to sell what they owned. The stockbrokers were completely pale from horror. As fear and uncertainty increased, some of them were running around like crazy. Officers closed the visitor hall because of the chaos. This was unusual for the New York Stock Exchange, which usually looks calm.

    Rescue Operation for the Collapsing Stock Market

    great depression

    At noon, the worst moments of panic seemed to be over, and a rescue operation was about to begin. A community of leading bankers and investors were willing to collect $20–30 million in a pool to purchase stocks and valuable papers. In a statement to the press, they mentioned how “there was some tension in sales,” and so they decided to fix the imbalance to support the market now.

    An hour later, the Vice President of the New York Stock Exchange, Richard Whitney, appeared. By finding his way through the crowd confidently, he reached the center where US steel shares were sold. He ordered 10,000 shares at a price higher than he asked. Then he stopped by 20 different points and bought a large number of shares. In a few minutes, he spent about 20 million dollars of bankers’ money.

    But the effect was short-lived. The stock tickers were still unable to reach the speed of trading. Even though the market had recovered somewhat in response to this hard attempt, the bad news continued to come: The stocks were continuing to be sold wildly. Immersed in sales orders and ticker tapes to their knees, stockbrokers were watching hopelessly how much money their customers were losing per minute. The stock market closed at three in the afternoon as usual, but even hours later, the lights were still on in the office windows as the dealers were trying to cope with the transactions. The restaurants around Wall Street remained open all night, and the hotels were full.

    The clerk in New York hotels asks the guests: “Do you want a room to sleep or to jump? You had to stand in line to get a window to jump out of.”

    Will Rogers, American humorist

    Why Did the New York Stock Exchange Crash?

    In the months preceding the collapse of Wall Street on Black Thursday, the US had already been in a frenzy of buying stocks. The offices of stock brokerage firms were filled with men and women who thirsted for profit every day all over the country. The system of purchasing shares by depositing an allowance allowed ordinary people to buy shares on credit. The purchaser was investing only a small amount, for example, 10 percent of the original value, and that was the allowance. The rest of the value was borrowed from the broker by holding the stocks as assurance. When the value of the shares rose, the owner sold them, paid the broker his money, and pocketed the profit.

    The possibility of making such a quick profit had already mobilized those who were rich, and also those who wanted to take the lion’s share. For the ones who wanted to get the latest financial news, the hotels installed machines in their lobbies that recorded the stock market news; In fact, the French ocean liner Ile de France was on its way to Europe with fully equipped stock tickers from New York and a brokerage firm’s office. But on September 5, an economist named Roger W. Babson warned everyone. “Sooner or later, a crash is coming.

    Starting on this date, the trust started to decrease. As the stock values fell, the buyers who purchased shares by paying allowances saw the money in their hands vaporize but also began to be pressured by brokers who wanted more allowances to protect the money they lent their customers.

    The number of bond sellers exceeded the number of buyers by too far, and thousands of people whose money ran out had to sell their investments. On Monday, October 21, a huge wave of sales swept Wall Street which paved the way for the next crash three days later.

    Calvin Coolidge, who withdrew from being a candidate for the presidency, and Herbert Hoover (right), who took his place. Great Depression
    Calvin Coolidge (left), who withdrew from being a candidate for the presidency, and Herbert Hoover (right), who took his place.

    The two US presidents, Calvin Coolidge and Herbert Hoover, played a key role in the economic downturn of 1929 and the Great Depression that lasted until the 1930s. A third president, Franklin D. Roosevelt, brought a new order to America. In March 1929, Coolidge was president for six years. Seven months after he left his post, what brought about the collapse of Wall Street and Black Thursday was his inability to prevent stock market speculation and easy borrowing.

    This economic collapse happened during Hoover’s presidency, which promised the American people “One chicken in every pot and a car in every garage.” Instead of realizing this promise, the president found himself facing the Great Depression; steel and automobile production had been hit hard, freight costs had declined dangerously, and the construction industry had almost stopped. Hoover’s inability to cope with the great difficulties led Franklin D. Roosevelt to win the 1933 presidential race. Roosevelt introduced the New Deal plan, which implemented an economic policy and a social security program that included industry and agricultural reforms.

    The Effects of the New York Stock Exchange’s Collapse

    One of the first countries outside the United States that the Wall Street Exchange crash and the Great Depression shook was the United Kingdom. There was no such economic boom in the United Kingdom as seen in the US in the 1920s, and there was already an unemployment problem going on. However, London was still one of the leading business centers and was the major overseas market for US stocks. By the end of 1929, the “unbalanced” economic situation had also turned into a mess there. In 1931, the number of unemployed reached 2.5 million and was still increasing. In August, growing hopelessness caused a split in the Labour Government. To save the political situation, Prime Minister Ramsay McDonald put together a national coalition government.

    In the fight for their savings deposits. Crowds of people in front of the municipal savings bank in Berlin. Great Depression
    In the fight for their savings deposits. Crowds of people in front of the municipal savings bank in Berlin.

    Abandoning the “gold standard,” which is the monetary system in which the basic currency unit is equal to a certain amount of gold, the United Kingdom went to the “sterling devaluation” the following month. This resulted in an international echo. The situation shook up the largest gold producer in the world, South Africa, which then had a solid economy.

    Australia’s economy was built on overseas borrowing, and as a result of the economic crisis, this borrowing habit suddenly ceased. The economic crisis worsened with the fall of the world’s wool and wheat prices. However, the versatile farming economy stayed solid in New Zealand as usual. On the other hand, the economies of Indonesia and Brazil fell into a very inadequate situation as the tire and coffee markets almost reset.

    In Europe, bank failures followed each other after the Great Depression. The crisis started in Austria, where the country’s largest bank, Creditanstalt, reported massive losses in the spring of 1931 and was almost unable to repay its creditors. American and British creditors rushed to the banks to get whatever they could take.

    A few weeks later, Germany’s powerful Darmstadter Bank and the National Bank went bankrupt. Germany was among the countries worst affected by the stock market crash. It was time for Germany to pay the large debts borrowed from the US to restructure the country after World War I. Unemployment was growing. Some other banks went bankrupt too, and aircraft maker Willy Messerschmitt was dangerously on the verge of bankruptcy as well.

    Large stock exchanges in Belgium and the Netherlands were desperate during the Great Depression. Stocks fell, and the balance of payments was badly affected. Economic insufficiency deeply shook the daily lives of the people in Spain, and laid the groundwork for a bloody civil war that would begin a few years later. In contrast, the economies of Switzerland, France, and Scandinavia were not much affected by Black Thursday compared to other countries.

    The Brooklyn Daily Eagle newspaper with the headline "Wall St. In Panic As Stocks Crash". This headline can be considered the beginning sign of the Great Depression that lasted from 1929 to 1941.
    The Brooklyn Daily Eagle newspaper with the headline “Wall St. In Panic As Stocks Crash”. This headline can be considered the beginning sign of the Great Depression that lasted from 1929 to 1941.

    The Biggest Fraud at an American Bank

    One consequence of the Great Depression and Black Thursday was the discovery of the largest bank fraud known in the world to date. For over a year, 15 employees of the Union Industrial Bank in Flint, Michigan, played on the New York Stock Exchange, from vice-presidents to veterans. But the money they used was the bank’s money, not theirs.

    By the fall of 1929, Wall Street fraudsters had “borrowed” more than two million dollars from customers’ bank accounts. The tellers were content with pocketing the cash deposited in the bank and buying stock with it. When the bill rose, part of the profit was used to replace the stolen money and the interest, if there was any. Then the rest was invested in Wall Street again. When a customer wanted to withdraw their money, it was paid from someone else’s account. They were mixing the accounts, and playing with the books, and the bank inspectors were deceived.

    After the stock market crash of 1929, it turned out that 1.5 million dollars were lost from the bank’s money solely in September. Criminals were caught, accused of fraud, and convicted. They received sentences of a few months to ten years.

    TIMELINE OF THE 1929 GREAT DEPRESSION

    Thursday, October 24, 1929: Black Thursday on Wall Street

    In a breakdown at the New York Stock Exchange, 13 million shares were sold in only a few hours. The price decline prompted many speculators to rush to unload their holdings. There was a 30% discount in prices. On the 29th, a confirmation of the “crash,” was made. What started on “Black Thursday” would become the worst economic disaster in human history. This led to the complete collapse of the United States. And the political and economic consequences felt throughout the globe.

    On May 11, 1931, the Creditanstalt filed for bankruptcy

    In the wake of the Wall Street collapse, which precipitated a severe economic downturn in the United States, Austria’s biggest bank was forced to file for bankruptcy. The Creditanstalt, which had been operating since 1855, declared bankruptcy, leading to a complete collapse of the Austrian stock market. Germany eventually felt the effects of the global economic downturn and entered a state of catastrophe.

    The Danat Bank failed on July 13, 1931

    Just like its Austrian counterpart, the Danat Bank or Darmstädter Bank was forced to shut down. The devastating effects of the Wall Street collapse and the ensuing economic crisis were too much for the German bank to bear. Attempts by American banks to extricate themselves from the crisis by reclaiming all of their overseas money ultimately led to the failure of several financial organizations.

    In 1931, September 21st, the British pound was devalued

    After the stock market collapsed in October 1929, the United Kingdom’s economy was in disarray, and the government was compelled to devalue the pound sterling by over 40%. In addition, it did away with the gold standard, which had been in place since the 19th century and had the monetary unit be equal to a predetermined weight of gold. After that, dozens of other currencies in the system, including the French franc, followed the same road. France had been given a reprieve up to that point, but its refusal to discount the franc had kept the crisis going strong in the country.

    In a speech on July 2, 1932, Roosevelt announced the “New Deal”

    great depression

    The term “New Deal” was first used in public by then-New York Governor and future U.S. President Franklin Delano Roosevelt. This idea, developed from the work of British economist John Keynes, aimed to implement social and economic reforms in response to the Great Depression.

    Ottawa, Canada, July 20, 1932: The Opening of the Imperial Economic Conference

    In an effort to save its economy, the United Kingdom decided to enter into treaties with several Commonwealth territories. The conference’s stated goal was to institute protectionist measures. More than a month after discussions began, mutually beneficial reciprocal tariffs were established.

    The New Deal was officially launched by President Roosevelt on March 4, 1933

    The American people chose Franklin Delano Roosevelt as their leader in November of 1932. As soon as he took office in March 1933, he began implementing the New Deal.

    On March 5, 1933, Roosevelt ordered the closing of U.S. banks

    U.S. banks were closed for four days after the new president issued the order the day after his inauguration. He believed this would calm people down after a string of bankruptcies. As of March 9th, business would resume if debts were settled.

    Roosevelt imposed a gold ban on March 6, 1933

    In an effort to end the economic downturn that had dogged the nation since 1929, the United States instituted a ban on the export of gold. It was the following month before the gold standard was finally scrapped.

    Official beginning of the Civilian Conservation Corps on March 31, 1933

    The Civilian Conservation Corps was one of the main government initiatives begun by the United States as part of the New Deal, allowing the government to employ two million unemployment people in a nationwide reforestation program.

    Agricultural New Deal Programs, May 12, 1933

    Roosevelt’s Agriculture Adjustment Act (AAA) was a cornerstone of his economic revival plan. The stock market fall of 1929 exacerbated the agricultural situation. The Act’s goal was to halt the catastrophic overproduction of agricultural goods by increasing their prices.

    Farmers get monetary compensation from the state in return for shrinking their farmland. The AAA was also making efforts to make debt repayment easier. While most Americans were going hungry, surpluses were destroyed along with many crops.

    The Tennessee Valley Authority was established on May 18th, 1933

    As part of FDR’s New Deal, the government agency known as the Tennessee Valley Authority (TVA) was established. They hoped to accomplish their goal of lowering the unemployment rate by way of intensive labor. At that time, almost 12 million people in the United States were without work.

    thout work.

    Thus, the government’s efforts to develop the Tennessee River basin secured economic growth in the area and helped to reduce the region’s historically high unemployment rates. The dams prevented the widespread flooding and provided enough power to supply several million homes.

    A National Industrial Recovery Act was approved on June 16, 1933

    The NIRA was passed as part of President Roosevelt’s New Deal initiative to alleviate the country’s economic crisis. Its goal was to facilitate government engagement in industry competition to enhance competitive behavior.

    The goal here was to have everyone on the same page with things like pricing, hours, and salaries. This was why Congress established the National Recovery Administration. Businesses were not required to sign on, but those who did proudly displayed their adherence to NRA standards by using a logo with a blue eagle and the organization’s letters.

    As of January 30, 1934, the dollar was devalued

    When the Great Depression hit, it caused a 41% devaluation of the dollar.

    The Social Security Act was signed into law on August 14, 1935

    The New Deal program paved the way for the passage of the Social Security Act, which helped the neediest among people.

    France’s franc currency was devalued on October 1, 1936

    Shortly after the Popular Front’s electoral victory, France devalued the franc to help the country weather the Great Depression. In response to the economic catastrophe that followed the 1929 stock market collapse, the nation moved much too slowly. It was difficult for the government to keep the Poincaré franc’s value stable when the pound and the dollar were devalued many years ago.

    As a result, there was a major disparity between the value of the French currency and that of other countries’ markets. France, which had been immune to the crisis thus far because of its financial independence, was hit hard. In a time when other countries’ economies were starting to stabilize, this delayed response did the country no favors.

    The Jarrow March, October 5, 1936

    During the Great Depression, citizens of one of the worst-affected communities began a large hunger march. Many individuals looking for work headed south toward London, where a large group of them had already congregated. There had been a number of marches since the crisis of the Great Depression began, but the one in Jarrow will always be the most significant.

    References

    1. Brendon, Piers. The Dark Valley: A Panorama of the 1930s (2000).
    2. Eichengreen, Barry J. (2015). Hall of mirrors : the Great Depression, the great recession, and the uses-and misuses-of history. New York, New York: Oxford University Press. ISBN 978-0-19-939201-8.
    3. Davis, Joseph S. The World Between the Wars, 1919–39: An Economist’s View (1974)
    4.  “The Great Depression”. drought.unl.eduArchived.
    5. Garside, William R. Capitalism in Crisis: international responses to the Great Depression (1993)
  • Japanese Underworld: From Samurai to Yakuza

    Japanese Underworld: From Samurai to Yakuza

    The 1868 Meiji Reforms ravaged the feudal world. Many samurai were deeply injured by these reforms, which they saw as a betrayal of their lifestyle and the true nature of Japan. Still, the samurai is a model for a number of recent Japanese groups and organizations, such as the infamous Yakuza. The Japanese underworld resembles one of the most interesting philosophies on Earth. The ideas behind the samurai concept date back at least 1000 years in Japan and are based on Confucian ethics, which originated in a world dominated by war.

    The law that the samurai obeyed and followed until his death was called Bushido, 武士道, “the way of the warrior. The Samurai had been an influential and prestigious part of Japanese society for centuries. However, since the 1600s, the Tokugawa shogunate (one-man rule) had reduced the opportunities for war. When there was peace and prosperity, the merchant classes grew, and the warriors were mostly left alone.

    Mon crests

    From the 12th century in feudal Japan, decisive badges (mon or kamon) were used on the battlefield, on armor, on banners, and on almost any personal object. Unlike the complicated tradition of western armament, each mon generally consisted of a single flamboyant symbol in a circle; the color was insignificant. The coat of arms could be a military motive like an arrow, or an animal symbol like the butterfly of the Taira clan. However, the most common were plant-based.

    The eldest son of the family usually inherited his father’s arms, and the younger sons used a slightly different kind of motive. As a result, there are 10,000 patterns registered today. The only arm that was inviolable was the coat of arms of the Emperor and his chief advisor. After the Muromachi period (1336-1753), the social use of the mon became more common. The new merchant class adapted them to the advertising logos that have survived to the present day.

    The seven virtues of Bushido

    These virtues were the cornerstones of the samurai warrior principles. They are also almost identical to the “Core Army Values” adopted by the US Army in the mid-1990s (loyalty, duty, respect, selfless service, honor, integrity, and personal courage). Among the many books written on the subject, the one best known in the west is Bushido Shoshinshu, the Code of the Samurai. The work was written by the samurai and military strategist of the early 18th century, Taira Shigesuke. The book is still important to reflect the mentality of modern and especially institutional Japan.

    Rectitude 義, Courage 勇, Benevolence 仁, Respect 礼(禮), Honor 名誉, Honesty 誠, and Loyalty 忠実.

    Seven virtues of the Bushido code.

    The legacies of the Samurai

    The reforms carried out on the road to modernization in the 1860s stimulated the Samurai idea in various organizations. Gen’yōsha, the Black Ocean Society, was one of them. Founded in 1881, the association aimed to unite hundreds of secret groups, each with their own unique codes. This very powerful and aggressive group turned Japan’s first elections in 1892 into a bloodbath. They also killed the Korean queen in 1895, which started a 50-year Japanese invasion.

    Kokuryu-kai, namely the Black Dragon Society, was founded in 1901. In addition to supporting Japan’s policy of spreading to Asia, the association also carried out various acts of violence against student and worker associations; politicians who were perceived as left-wing, and those who were against the democratization process in general.

    The Black Dragon Society collaborated with the gamblers and gangsters of the Yakuza for their influence, which turned into one of the world’s leading crime cartels. The Yakuza did not have its own traditional policy, so they romanticized the samurai of the past; thus, a mask of grandeur was put on the actions of crime such as extortion, fraud, prostitution, and human trafficking.

    Yakuza

    September 1993, Japan --- A member of the Yakuza Mafia displays his hands which are missing most of the pinkies. Fingers are cutoff as a sign of loyalty.
    September 1993, Japan — A member of the Yakuza Mafia displays his hands which are missing most of the pinkies. Fingers are cut off as a sign of loyalty.

    Yakuza people claim that they have invariable moral rules (just like the Italian Mafia) originating from the Bushido. Loyalty in every gumi or gang is extremely important. The hierarchy is strict, as in other parts of Japanese society, and feudal rituals are still performed. However, the Yakuza is not a secret community; they are part of Japanese politics and business.

    So much so that some community headquarters use a nameplate at their doors, just like companies. Yakuza can be easily recognized even when they do not wear their mon that reveal their clans. They have gaudy clothes, expensive cars with dark windows, and snippy movements… All of these are qualities that define gangsters all over the world, but it can be said that they are especially descriptive in a country where even the company heads do not put themselves at the forefront.

    Yakuza traditions

    The Yakuza is also famous for its eye-catching tattoos that cover all their bodies, namely horimono. Such tattoos have always been associated with “wind-driven groups” and have identified those who live on the edge of society. Making tattoos is a symbol of group solidarity and physical bravery, as well as a declaration of one’s preference for the “dark side”. When a samurai disappoints his lord, he pays the price with hara-kiri (seppuku). This was a traditional form of suicide, and today’s yakuza pay the cost of the error with yubitsume instead, that is, by cutting a part of the finger.

    Organization admission ceremonies and other ceremonies that seal the agreements made are of great importance. In these ceremonies, a few glasses of sake are offered in a presentation to the Shinto gods respected by the Yakuza. The blood brotherhood ceremonies based on blood exchange are not so popular anymore due to the risk of HIV.

  • Louis Pasteur: Early Life, Discoveries, and Contributions to Science

    Louis Pasteur: Early Life, Discoveries, and Contributions to Science

    When Louis Pasteur died in 1895, he was a national hero in France and became internationally famous as well. The public got to know him most with his work on the prevention and treatment of infectious diseases in the last years of his life. But for the scientific community, he was the person who started the field of stereochemistry, showed that fermentation is a biological process, disproved the theory of spontaneous generation, explained how diseases work on a biological level, helped establish the microbe theory, and showed the economic and social benefits of experimental laboratory research in many fields.

    Although Pasteur’s position was partly based on his own advertising, it was actually due to the wide-ranging achievements of microbiology in its theory and practice. Gerald Geison wrote for him: “While he often exhibits great courage and a powerful imagination, the characteristic features of his work, in general, are clear mindset, extraordinary experimental skills, perseverance, and even stubbornness.

    Who Was Louis Pasteur?

    Pasteur was born in Dole, in the east of France, and his father was a tanner. He went to school in Arbois and Besançon, and his grades were good enough to be recommended for the entrance exams of the respected Ecole Normale Supérieure in Paris. He failed the exam in 1842 but succeeded the next year. He chose physical sciences, and after he finished his undergraduate degree, he focused on crystallography, a new field in physics and chemistry, and got a double doctorate in it.

    He studied the chemical formula and the relationship between the crystalline forms of sodium tartrate. Scientists were interested in different, that is, isomorphic, chemicals with very similar chemical structures. Salts of tartaric acid were of particular interest. Because of dimorphism, the microscope revealed that the two forms are mirror images of each other. Of course, luck played a role: crystallization is extremely heat-sensitive, and Pasteur was working at the most appropriate time of the year. Sodium tartrate shows this asymmetry more clearly than almost any other salt. He found that crystals that come from nature have the same polarization properties as those that are made in a lab.

    Through long and difficult observations, he revealed that natural crystals always have right-handed material, while synthetic crystals have equal amounts of right and left material. This meant that the polarization properties neutralized each other. In this study, Pasteur’s scientific style is defined by five things: his ability and willingness to experiment, his use of the microscope, his interest in how life works chemically, how he made the most of luck, and how important his results were.

    In 1849, Louis Pasteur transferred to Strasbourg University as a professor of chemistry, continuing to work on asymmetry and enjoying his growing reputation. His private life changed when he married Maria Laurent, the daughter of the university president. Marie provided both financial and moral support for his career. Six years later, he was appointed dean of the newly established Science Faculty at Lille University and moved there. He welcomed the university’s mission to combine research with teaching and science practice to support the local industry. He taught lectures on bleaching, refining, and brewing but continued his research in the field of asymmetric compounds and optical activities.

    The Great Fermentation Controversy

    In a drawing of the day, Louis Pasteur and Felix-Archimede Pouchet argued.
    In a drawing of the day, Louis Pasteur and Felix-Archimede Pouchet argued.

    Pasteur’s great interest in the chemistry of living organisms led him to investigate fermentation and especially the role of yeast in alcohol production. In 1857, he gave a speech on lactic acid and amyl alcohol, the common by-products of bad fermentation. He argued that the asymmetric optical properties of amyl alcohol came from the fermentation process, which was related to living organisms. This was against the common idea that fermentation is a chemical process.

    Returning to the Ecole Normale as director of scientific research in 1860, Pasteur published his main work, which finalized the biological explanation of fermentation. It was interesting that a person trained in chemistry and physics advocated vitalism, emphasizing the uniqueness of life and the fact that life cannot be reduced to material forces. Pasteur turned his microscope from crystal structures to fermented grapes and sour milk, observing large molecules such as yeast and other ferments that were previously supposed to change shape in the process. It once again affirmed that yeast consists of living cells or microorganisms.

    During the fermentation studies, there was a very famous contrast between Pasteur and Félix Archimède Pouchet on the spontaneous generation of life. Pasteur first made a speech against spontaneous generation in February 1860, publishing an article the following year dealing with the fact that life always derives from an earlier life. He received an award for this article. The subject of his work was leavening in liquid mixtures and the deterioration of natural products. He argued that these could always generate spontaneously without contamination from live organisms.

    Two scientists embarked on a scientific duel, with mutual scientific results and polemics being presented and sophisticated sterilization techniques mixed with religious inferences over whether life was constantly created. Louis Pasteur defended the general view that life was created by God in the distant past and could not be created by simple physical force. This strife not only resulted in the consensus of the scientific community but, unusually, in the judgment of the committees of the French Academy of Sciences in favor of Pasteur and against spontaneous generation.

    The microscope, other instruments, and silk cocoons Pasteur used to study silkworm disease pebbles in the 1860s.
    The microscope, other instruments, and silk cocoons Pasteur used to study silkworm disease pebbles in the 1860s.

    This contrast led Pasteur to a new field: the research of disease in animals and humans. Doctors had long thought that the development of fever and septic infections was similar to fermentation and spoilage. Thinking that these processes involve living organisms or microbes raised new questions. Of course, the link was speculative, and this was well reflected in the phrase “germ theory of diseases.” The term “microbe” explained that these organisms were very diverse, very common in the environment, especially in the air, and were potentially powered by fission; the fact that it was a “theory” meant that the link that is needed to show they caused the disease still had to be proven.

    Following the practical applications of the microorganism theory to fermentation and spoilage, Pasteur found that heating the wine to 50 degrees killed yeast cells and prevented spoilage. The same method is still used to prevent milk from spoiling and is called pasteurization. The most famous application of Pasteur’s germ theory was the development of antiseptic methods by British surgeon Joseph Lister, who assumed that the septic infection of wounds was related to microorganism contamination, leading to rotting. Lister had always given Pasteur credit for his work, and he became Pasteur’s most well-known supporter by extending Pasteur’s germ theory to all infections and diseases that spread from person to person.

    Pasteur’s application of science to practical problems prompted the French government to demand that he lead a team to study the disease that had arisen in the silk industry in 1865. After three years of investigation, the disease was attributed to a parasite, and they recommended ways to keep silkworms healthy and free from germs. Pasteur’s success provided a more distinguished view of the theory that diseases are germ-borne. Tests have begun in medical research around the world. But during one of his projects, Pasteur had a stroke. This didn’t slow him down or change how hard he worked in school, but his left side was partially paralyzed for the rest of his life.

    Pasteur’s first study of microbial diseases was on anthrax, which was not only one of the main problems of the French livestock industry but also affected humans. The bacterial cause was identified in 1876 by Robert Koch. Although Pasteur is best known for the vaccine he produced for this disease, he opposed some aspects of Koch’s work. He predicted that a mild disease could revert to a virulent strain based on the principle of smallpox vaccination. He exposed the anthrax bacteria to the air, and its virulence decreased. The laboratory results were successful. So he undertook a field trial at Pouilly-le-Fort, near Paris, in 1881.

    Twenty-five sheep were vaccinated, and an equal number of sheep were in the control group. Two weeks later, all of them were infected with anthrax. Nearly all of the vaccinated sheep survived, while almost all of those who were not vaccinated died. Pasteur’s work had shown that in addition to directly benefiting French farmers, vaccination could be applied to many, if not all, infectious diseases. At the International Medical Congress in 1881, he was treated like a star, and the French government gave him a lot of help.

    Louis Pasteur and the Rabies Vaccine

    Pasteur's interest in helping people and his popularity led to many images of him in the media, such as on chocolate boxes.
    Pasteur’s interest in helping people and his popularity led to many images of him in the media, such as on chocolate boxes.

    But even bigger improvements were imminent. His next project was a protective vaccine against rabies. Its unpredictability and the fact that the symptoms, once they appeared, brought about a terrible death that could not be prevented were causing great concern in the public. Pasteur and his increasing number of assistants first reproduced the disease in laboratory dogs and rabbits under controlled conditions. The first trials with dogs were successful. Then, because of public pressure and more trust in the new vaccine, they switched to testing on people.

    However, the rabies vaccine was not used for protection but to treat people who were already infected. The aim was to strengthen immunity by taking advantage of the long incubation period. The first human subject was a boy named Joseph Meister, who was bitten by a rabid dog in eastern France. It was brought by her parents, who knew of Pasteur’s possible life-saving treatment. The boy survived with treatment. After this case, the vaccine was tried on another child, and the result was again positive. Once it was made public in October 1885, rabid dog-bitten victims from France and Europe, and soon all over the world, flocked to Paris to receive this free treatment.

    The press published Pasteur’s newly popular rabies treatment on their front pages. They celebrated Pasteur as the great scientist and humanist who promised to rid humanity of infectious diseases. He received many new awards, but most importantly, there were donations from the public that allowed him to set up an institute to develop further vaccines and other life-saving innovations. With donations from around the world, the Pasteur Institute officially opened in November 1888.

    This great man’s health had deteriorated. Although he was still in the laboratory and the clinic, he could not take an active role in any research. When he died in 1895, it was proposed that he be buried in the Pantheon alongside other French heroes with a large public funeral. But Pasteur and his family had already made their plans. The best place to bury a scientist who changed the role of laboratory research in science and public relations was in the crypt at his institute.


    Bibliography:

    1. Ullmann, Agnes (August 2007). “Pasteur-Koch: Distinctive Ways of Thinking about Infectious Diseases”Microbe2 (8): 383–387.
    2. Anderson, C. (1993). “Pasteur Notebooks Reveal Deception”. Science259 (5098): 1117. Bibcode:1993Sci…259.1117A.
    3. “History of the Cholera Vaccine | Passport Health”www.passporthealthusa.com
  • Louis Leakey and Mary Leakey: Origins of the Humankind

    Louis Leakey and Mary Leakey: Origins of the Humankind

    Sometimes great scientists make their greatest discoveries while they are working with a partner. This was true for Marie Curie and Pierre Curie, who complemented each other’s work in their research on radioactivity, and also for Louis Leakey and Mary Leakey, who pioneered research on the origins of man in East Africa. The Leakey team worked together on numerous research projects and excavations, which established the “Leakey” name as a prominent figure in the field of human evolution studies. Their work conclusively established that the origins of humankind can be traced back to Africa. Louis Leakey and Mary Leakey traced the origins of the human lineage over a period spanning 18 million years to learn more about the ape-like ancestors of Homo sapiens. They discovered the first human being to make a tool, called Homo habilis, and named it “Jonny’s child.”

    Louis Leakey and Mary Leakey

    Louis Leakey and Mary Leakey working on an archaeological find.
    The Leakey discoveries were a family business. Here in 1960, Louis, Mary, and 11-year-old Philip excavated a site near the Olduvai Gorge where the first humans lived two million years ago.

    The couple also made independent discoveries. Mary found fossil footprints that show the first humans walking upright three million years ago—about a million years before our ancestors started making tools. The visionary Louis helped launch the first long-term field studies of wild primates by sending Jane Goodall to record chimpanzee behavior, Dian Fossey to observe mountain gorillas, and Birute Galdikas to observe orangutans. These studies helped shape our understanding of the social lives and cultures of our early ancestors. Together, Louis and Mary turned paleoanthropology from a simple study of rocks and bones into the complex and rich field it is today.

    Although it was Mary Leakey who made many of the most important discoveries, Louis Leakey was the person who fueled the work. Louis Leakey’s idea to seek out the origins of humanity in Africa, disregarding the prevailing scientific consensus, was the driving force behind their expedition. At the time, paleoanthropologists believed that humans migrated to Africa after evolving in Europe and Asia. Louis proved this idea wrong, and over time, with Mary’s contributions, he completely ruled out the old belief.

    Louis’ bias in favor of Africa was partly due to his origins. His parents were missionaries who lived with the people of Kikuyu in a village in the mountains above Nairobi, in British colonial East Africa (now Kenya). Although his parents were English, Louis always saw himself more as a Kikuyu. He was the first white boy born among the Kikuyus, and they accepted him into their lives. When he was 11, he joined the secret reception ceremony of the tribe with other children his age and became a member of the Mukanda.

    His parents had hired a teacher for his two older sisters, his brother, and himself, but he eventually did not receive a regular education. Louis had plenty of time to participate in even more interesting events and adventures with the Kikuyu blood brothers. He learned their language and how to hunt with a bow and arrow, make traps, trace, and even hunt animals with his bare hands. Louis Leakey attributed his unique insights and perspectives on early humans and human evolution to his traditional Kikuyu education.

    Louis Leakey and Mary Leakey: Exploring ancient Africa

    However, it was the book his cousin gave him for Christmas that took him on this professional path. The book Days Before History was about the adventures of an English boy named Tig who lived in the Stone Age. The book included illustrations of the Stone Age peoples and the tools they created, with dates on them. Louis began collecting glass rocks inspired by the book, which he discovered in eroded carvings along streams near his home. His family made fun of his “broken bottles,” but Louis had an independent streak.

    He then consulted the only scientist he knew, Arthur Loveridge, the curator of the small natural history museum in Nairobi. Loveridge studied the finds and determined that some of them were indeed “tools,” but also explained to Louis Leakey that there is still much unknown about the Stone Age in Africa. These words changed Louis’ world; now he had research to pursue his entire life. In his autobiography, White African, he writes, “I definitely decided to go down this road until everything about the Stone Age [in Africa] was known.” He had just turned 13 years old.

    It was not easy for Louis to pursue his desired career. His schooling was limited to the few years he attended school in England during his off days, but he managed to close this gap by working hard and was accepted into St. John’s College, Cambridge. After earning a dual bachelor’s degree in anthropology and modern languages (one was Kikuyu), he received a small research scholarship.

    On this scholarship, he bought a ticket for a ship to Kenya and organized the first East African archaeological expedition in the summer of 1962. One of the Cambridge professors tried to dissuade him by saying that he would waste his time looking for the first humans in Africa because “everybody knows they originated in Asia.” Such negative remarks made Louis even more determined to find the evidence he is looking for and prove the professor wrong.

    Eventually, Louis led four separate voyages to East Africa. On each, he uncovered further evidence of the continent’s obscure ancient epochs, such as bone fragments and prehistoric stone tools, that shed light on a time period that few scientists had ever considered. He was particularly interested in discovering stone hand axes from the Chellean (Abbevillian) civilization, named after those unearthed in the French town of Chelles. Large, oval-shaped hand axes were formerly seen as evidence of the world’s first civilization by archaeologists.

    Louis Leakey and his axe

    On the team’s second expedition, John Solomon, the team’s geologist, found such a hand axe in 1929 at the site called Kariandusi. He wasn’t sure what he found was a hand axe, but Louis made the correct diagnosis as always. He sent Solomon and a student to find more of these, which they did. In those days, there was no method for dating the geological layer where fossils and ancient man-made remains were found.

    Geologists often estimated the age of such objects by measuring the depth of the sediments surrounding them, which were assumed to accumulate at a constant rate. Using this approach, Louis estimated the hand axes to be at least 50,000 years old. Later, more precise dating tools were used, and scientists found that hand axes were actually as old as 500,000 years.

    Discovering tools in Africa that were at least as old as those in Europe was thrilling, and Louis had the funds to undertake his biggest expedition yet. In 1931, he set out for Olduvai in the Tanganyika District (now Tanzania). In the Rift Valley, the 25-mile (40-km)-long Olduvai Gorge meandered deep along the Serengeti Plateaus. German geologist Hans Reck surveyed the valley in 1913 and found an abundance of extinct mammal bones as well as modern human bones. Reading Reck’s report, Louis thought that although Reck did not find any stone tools in the valley, the geologist had overlooked them.

    He invited Reck on an expedition. With four vehicles and a crew of eighteen people, they traveled overland, following the footsteps of Indian traders who had crossed Nairobi for three days, but the trail ended at some point. They then advanced about five miles (eight kilometers) an hour over two days and finally reached the border of the Olduvai Gorge on the morning of September 27. A little after dawn the next day, Louis walked on his own across the valley and found a hand axe. The feeling was enrapturing. He quickly ran to the camp with an axe in his hand and awakened others to share his joy.

    Louis Leakey and Mary Leakey’s love

    Louis met Mary after his expedition. Mary (Douglas) Nicol, as she was called at the time, was a young artist and a promising anthropologist. Louis was married, had a daughter, and his wife was pregnant. He was also truly broke. He had an income from anthropology and his lectures at St. John’s but felt he could get some funding with his popular book, Adam’s Ancestors, in which he described his discoveries. He needed someone to make drawings showing the stone tools, and a friend introduced him to Mary at a dinner party.

    The daughter of a landscape painter, Mary grew up traveling in Italy, Switzerland, and France. Like Louis, she was struck by archeology as a child. A French archaeologist had guided her and her father through the rooms of the prehistoric Pech Merle Cave with murals and allowed them to search for stone tools in the excavated deposits. This trip lit a fire in her heart. “After that, I really never wanted to do anything else,” she said.

    Mary was also not properly educated. After the sudden death of her father, her mother sent her to a convent school, but she managed to be expelled from school by pretending (she had put soap in her mouth) and causing an explosion in the chemistry class. “The explosion was quite noisy, a lot of nuns came running, it must have been good for some to run,” she said about the incident. She then volunteered for many excavations and attended archeology and geology lectures at University College London and the London Museum.

    At the age of 20, she was unconventional, artistic, playful, and a glider pilot with a passion for French cigarettes. Whether she explained all this to Louis at their first meal is unknown, but they found each other very attractive and soon fell madly in love.

    Louis invited her on his fourth (and final) East African archaeological expedition. He was returning to Olduvai in January 1935. This time they followed a new route, the long, muddy road to the summit of the Ngorongoro Crater and then the dark, narrow gully lines. There were herds of animals—elephants, zebras, rhinos, and buffaloes—on the plateaus, and Mary fell in love once again, this time with Africa.

    Louis Leakey and Mary Leakey’s first discoveries

    Louis and Mary Leakey in 1961, looking at the tooth and palate of the Zinj, Australopithecus boisei fossil.
    Louis and Mary Leakey in 1961, looking at the tooth and palate of the Zinj (OH 5), Australopithecus boisei (Paranthropus boisei) fossil. Credit: The Leakey Foundation Archive

    Louis and Mary were looking for stone tools and well-preserved fossils of animals that are no longer alive in the gully. They found numerous hand axes and more primitive tools that they later called the Oldowan culture (now known to be 2 million years old, the oldest man-made objects in the world). But they could only find two bone fragments from the first human skull.

    It took 21 years before Louis was correct about the origins of humanity. During this time, he was divorced from his wife, married Mary, and had four children, three boys and one girl, but their daughter died in infancy. They settled in Nairobi, and Louis became the director of the museum where he first encountered his mentor, Loveridge. They spent all their spare time and every penny searching for bones and stones at sites in Kenya and Tanzania.

    Sometimes they found surprising things. In 1942, in the Olorgesailie of the Rift Valley in southern Nairobi, they found a path literally paved with hand axes, as if the first humans once owned a factory to produce them. In 1948, on Rusinga Island in Lake Victoria, Mary discovered the skull and facial bones of an ancient but well-preserved 20-million-year-old ape, the Proconsul; it was the first such ape face to be discovered.

    They found these fossils with the financial support of a London-based American businessman, Charles Boise. The businessman continued to provide them with small funds for expeditions, and in 1959, in Olduvai, finally, the financial support and the couple’s perseverance paid off. Mary Leakey made a discovery again. She went out alone while Louis was lying ill in the camp, and she slowly began to stroll down the rocky slope at the bottom of the gully. Around 11 o’clock, she noticed a piece of bone that stuck out of the ground rather than just standing on the surface. It looked like a piece of skull. She carefully brushed the soil above it and saw two large teeth on the jawbone. She immediately jumped into the Land Rover and drove frantically towards the camp.

    I found it. I found it. I found it.” Louis asked, “What did you find?” “Him, the man! Our man. The man we were looking for. Come now, I found his teeth!” Louis quickly pulled himself together and the two of them went to the site together. Mary was right: They had finally found the man they were looking for. Louis first named the skull Zinjanthropus, after the East African word for “man.” But it was later classified as a hefty form of Australopithecus, the hominin found in South Africa. Mary and Louis simply called it “Dear Boy.”

    After the “Dear Boy,” Louis Leakey and Mary Leakey became famous. With new dating techniques, geochronologists were finally able to determine the age of the fossils at Olduvai. It proved to be “very, very, very old,” as one of the Dear Boy’s scientists told Louis. In fact, the skull was 1.75 million years old, tripling the initial assumption. It was a discovery that shook the world. The discovery made headlines around the world and sparked an anthropological rush to East Africa by scientists in an attempt to make a claim. The American paleoanthropologist Clark Howell, a colleague of the Leakeys, explained that the discovery of Zinj started the era of scientific research into human evolution.

    Leakeys started full-time excavations in Olduvai with funding from the National Geographic Society. Mary led these excavations, assembling a team of Kamba workers, many of whom would be famous fossil hunters in their own right. Excavations were often family business; Louis, Mary, and their sons Jonathan, Richard, and Philip worked together. It was Jonathan who first found the bone fragments of the new human ancestor. Louis and Mary believed that Homo habilis was the hominid who made the oldest, most primitive tools for carving.

    From the very beginning, Homo habilis has been the subject of debate. Being an organism different from the Dear Boy would mean that the two hominin species—the first upright, bipedal humans—lived on the African savannah at the same time. Louis argued that this possibility was very significant; by looking at other animals, it could be seen that a large number of antelope and primate variants lived together. But most contemporary scientists strongly criticized this branched family idea; they expected a long and linear human line, but it was never going to be the case.

    3 million-year-old footprint

    Mary Leakey's most extraordinary discovery:  3 million-year-old footprint series of the first  hominins in Laetoli, Tanzania.
    Mary Leakey’s most extraordinary discovery: 3 million-year-old footprint series of the first hominins in Laetoli, Tanzania.

    Then came the sought-after proof: Leakey’s middle son, Richard, went on his hominin hunt expedition around Lake Turkana in Kenya. Here they found the same footprints; two different hominin species lived side by side, one with thicker bones and the other with a larger brain but slender bones. “They won’t believe you.” That’s what Louis said when Richard gave him the Homo habilis skull.

    But over time, they believed him. Today, paleoanthropologists draw many different human lineages, and they are all very branched. Louis Leakey died of a heart attack in 1972, a week after seeing Richard’s Homo habilis skull. He was 69 years old. Mary Leakey continued her excavations at Olduvai. Her team unearthed many fossils and thousands of stone tools. She mapped all of them in great detail, creating an almost 2 million-year-old record of the animal and human habitats that nestled in the gully.

    In 1974 she turned her attention to another site, Laetoli, where fossils older than Olduvai had been found. This is where one of the team members spotted a very old set of footprints in 1978. These were the footprints left by three people walking in the rain when a nearby volcano erupted three million years ago. When she revealed one of the finest footprints, Mary sat back and gazed at its beauty. She lit a cigar and said, “This is really a piece to be placed over the mantelpiece.

    Mary was 65 years old when she made this discovery. Mary continued her research in Laetoli and Olduvai until the late 1980s. When she died in 1996, Mary Leakey was the world’s most famous female archaeologist. Louis Leakey and Mary Leakey had achieved the goal they set before they set out on this African expedition. They had unearthed the evidence that the first ancient humans evolved in Africa. Like all great scientists, they shattered old ideas and ways of thinking – with stones and bones.


    Bibliography:

  • Francis Galton: Founder of Eugenics, Psychologist, and Explorer

    Francis Galton: Founder of Eugenics, Psychologist, and Explorer

    Often known as the father of the eugenic movement, Francis Galton was interested in a wide variety of fields, from the exploration of Africa to psychology, statistics, and fingerprint control. Tertius and Violetta were the youngest of Galton’s nine children. He was related to his older cousin, Charles Darwin, through their grandfather, Erasmus Darwin.

    Francis Galton’s early life

    It was taken for granted that Francis Galton, like Darwin, would study medicine. He started his education at the fully-fledged hospital in Birmingham, but in 1839 he transferred to King’s College in London. He had just returned from his Beagle cruise and was living near Darwin, who had just married Emma. Having hated his medical experience in Edinburgh, Darwin persuaded Galton to drop his medical education and join his university, Cambridge. In October 1840, Galton went to Trinity College, hoping that he would graduate with honors in mathematics, but he graduated only with an average degree.

    After drifting aimlessly for six years, Francis Galton organized an expedition to uncharted parts of Namibia, discovering a new tribe, the Ovambos, and taking meticulous measurements of the latitude, longitude, and temperature of the area. When he returned to England in early 1852, he was awarded the Founder’s Medal by the Royal Geographical Society. In 1853, he married Louisa Butler, the daughter of George Butler, Dean of Peterborough Cathedral, and published his first book, Tropical South Africa.

    Two years later, he published a very successful guidebook called The Art of Travel. However, he became interested in making retrospective weather maps, during which time he discovered high-pressure systems where the wind moved clockwise. These various steps formed the first part of Galton’s career.

    The idea of hereditary talent

    Killers were detained at Millbank Prison in London.
    Killers were detained at Millbank Prison in London. Francis Galton was putting together such photographs to examine whether people convicted of a particular crime had common facial features. He eventually decided they didn’t have it.

    The second phase began with Darwin’s publication of On the Origin of Species in 1859. Darwin used examples of artificial selection, such as fancy pigeons, to show how natural selection might work. Francis Galton thought that if selection works for pigeons, it can work for humans as well. Maybe the human race could also be developed by selective breeding.

    In 1865, Francis Galton’s article titled “Hereditary Talent and Character” was published in MacMillan’s Magazine, one of the many high-quality periodicals of the Victorian era. In this article, he examines the close relatives of famous people in his ensuing 1869 book, The Hereditary Genius. If talent and character are hereditary, he thought, these elite individuals’ closer relatives might have been more distinguished than their distant relatives. Galton came to the conclusion that this was, in fact, the case, ignoring bias and wrongdoing. That is, a famous man could get his son a job.

    The Hereditary Genius is regarded as the first example of the historical study of human progression or individual traits. Also in this context, Francis Galton is the first person to ask the question, “nature or nurture?” He even worked on a questionnaire and sent it to 190 people from the Royal Society to justify this issue with solid evidence. He tabulated the characteristics of these individuals’ families and tried to find out whether their interest in science was “innate” or came with the support of others. These studies were published in Men of Science: Their Nature and Nurture in 1874.

    Acquired properties

    In 1875, the second edition of Darwin’s book The Variation of Animals and Plants under Domestication was published. It was the chapter titled “The Theory of Pangenesis” that aroused Galton’s curiosity. Darwin needed a source of variation to keep natural selection working. He claimed that the particles he called gemmules were collected from different parts of the body to form sexual elements, and that their development in the next generation creates a new living being.

    Darwin thought of two mechanisms that produced variations. The first was that the genitals suffered damage that prevented the gemmules from assembling properly. Second, the gemmules could change due to the direct effect of changing conditions. These altered gemmules are then transferred into offspring, and after many generations, the change becomes inherited.

    Francis Galton was very interested in Darwin’s hypothesis, although he disliked the idea of gemmular differentiation with changing environmental conditions. From this, he attempted to form his own theory of inheritance. His theory was a version of the German evolutionary biologist August Weismann’s theory of heredity, which means that acquired traits are not passed on to subsequent generations (Weismann made this point in his 1889 letter to Galton) and that inheritance occurs only through the inheritance cells (egg and sperm cells).

    The anthropometric laboratory is established

    Francis Galton's first anthropometric laboratory debuted at the International Health Exhibition in London in 1884-1885.
    Francis Galton’s first anthropometric laboratory debuted at the International Health Exhibition in London in 1884-1885.

    But Francis Galton was more of a practical scientist than a theorist. In particular, he wanted to analyze data on human characteristics. On the advice of Darwin and botanist Joseph Hooker, he decided to measure the seeds of sweet peas. One reason he chose the sweet pea was that it usually does not cross-fertilize. Galton found that seed sizes were distributed in the next generation similarly to those in the ancestral plants. But he also found that the average seed size of the big ancestral seed returned to the mean. This was true for small seeds. When Galton plotted the mean diameter of the ancestral seeds along the x-axis and the new generation along the y-axis, he got a straight line. It was the first time that he obtained the regression curve, which was now one of the basic principles of statistics. From here, he calculated the first regression (or reversion, as he called it) coefficient.

    In 1884, Francis Galton London set up an anthropometry lab at the International Health Fair in South Kensington. Visitors were given cards on which various measurements were recorded. Galton also managed to collect partial origin data. From there, he showed that regression to the mean is also valid in humans. He also saw the correlation of measurements when he plotted a measurement such as forearm length on the axis of coordination with height and thus obtained the correlation coefficient, a new milestone in the history of statistics.

    When the International Health Exhibition closed in 1895, Galton moved its anthropometric laboratory to the South Galleries of the South Kensington Museum (today the Victoria & Albert Museum). Francis Galton was now interested in fingerprints, so he added a place for the thumbprint to his questionnaire. His friend, Sir William Herschel of the Bengal Civil Service, made the key observation that fingerprint patterns remained the same over time. In the 1890s, Galton published two books on fingerprints and played an important role in the use of fingerprints for personal identification.

    Heredity and eugenics

    Thumbprints from Francis Galton’s Finger Prints, 1892.
    Thumbprints from Francis Galton’s Finger Prints, 1892.

    Francis Galton’s most important book, “Natural Inheritance,” was published in 1889. This book inspired three main followers: Karl Pearson, W. F. R. Weldon, and William Bateson. The chapters about normal distribution and the continuous variation of characters grabbed the attention of Pearson and Weldon. But there was something else that caught Bateson’s attention. Galton was grappling with a problem. How could natural selection proceed in small marginal steps when it was constantly thwarted by regression and returns to the mean?

    To solve that problem, Francis Galton put forward the “organic stability” hypothesis to create variants that cannot return to the mean. According to Bateson, these discontinuous variants were exciting. He compiled many examples of discontinuous variation and published them in 1894 under the title Material for the Study of Evolution. As a result, Bateson was ready to rediscover Gregor Mendel‘s principles in 1900. Mendel’s laws defined the distinction and diversity of the different traits that Bateson was interested in, such as yellow and green pea seeds.

    On the contrary, Pearson and Weldon were firm supporters of the new model Francis Galton proposed in 1898, called the Law of Ancestral Heredity. The ancestral law was indeed applicable to the entire genome because it was based on a continuous series in which parents contributed half (0.5), grandparents a quarter (0.5) 2, and great-grandparents one eighth (0.5) 3. When the whole series was added together, it was equal to 1. Pearson and Weldon tried to adapt Galton’s ancestral law to different traits, but every time Bateson failed his attempts by showing that Mendel’s principles were much more in line with the data.

    Francis Galton and human intelligence

    Francis Galton was also interested in measuring human intelligence. Anthropometry obtained the first estimation from laboratory data. But later, he developed a better idea. He knew that there are two different types of twins, now called identical twins and fraternal twins. He published his findings in Fraser’s Magazine in his 1875 article. He found that identical twins were behaviorally similar beyond their physical similarities. He could not quantitatively measure their intelligence because an IQ test had not yet been created. But their results suggest that behavior and, therefore, intelligence have a distinct inherited component.

    Francis Galton described eugenics in a footnote to his 1883 book, Inquiries into Human Faculty and its Development. He explained that eugenics deals with questions about those who have superior qualities by inheritance, terminated by the Greek word eugenes, that is, “well-born.” He continued to use eugenics in his speeches and writings, and eugenics gained popularity in the 20th century. But it was not Galton’s idea to favor positive eugenics and weed out inferior eugenics.

    The idea began to gain momentum at the First International Congress in London in 1912, a year after Galton’s death. There have been many bad and unexpected results, especially in the United States, Scandinavia, and Nazi Germany, where women who were thought to be mentally or physically unhealthy were forced to get sterilized.

    In short, Francis Galton left behind a rather complex legacy. He made important contributions to a wide variety of subjects, such as his discoveries in Africa, his travel writings, statistics, and fingerprinting, but he also established eugenics, which paved the way to horrifying things.


    Bibliography:

    • Caprara, G. V.; Cervone, D. (2000). Personality: Determinants, Dynamics, and Potentials. New York: Cambridge University Press. ISBN 978-0-521-58310-7.
    • Clauser, Brian E. (2007). “The Life and Labors of Francis Galton: A Review of Four Recent Books About the Father of Behavioral Statistics”. Journal of Educational and Behavioral Statistics32 (4): 440–444. doi:10.3102/1076998607307449. S2CID 121124511.
    • Conklin, Barbara Gardner; Gardner, Robert; Shortelle, Dennis (2002). Encyclopedia of Forensic Science: A Compendium of Detective Fact and Fiction. Oryx Press. ISBN 978-1-57356-170-9.
  • Linus Carl Pauling: Architect of Structural Chemistry, and An Activist

    Linus Carl Pauling: Architect of Structural Chemistry, and An Activist

    Chemistry dominated Linus Carl Pauling’s (or Linus Pauling) entire spiritual and social life, beginning from his youth when he first witnessed a chemical reaction at a friend’s house in Oregon until his final months on his farm in Big Sur Beach, California. When he proposed to his future spouse, he was honest enough to say that marriage would come after his job. Linus Carl Pauling’s passion for science paid off; he made discoveries about the nature of chemical bonds and the basic structure of important biological molecules such as proteins.

    Who Was Linus Carl Pauling?

    In 1954, Linus Carl Pauling was awarded the Nobel Prize in Chemistry for these discoveries. His scientific expertise also supported his humanitarian efforts. The evidence he provided that fallout from above-ground nuclear tests caused a large number of birth defects and cancers was the main factor in his 1962 Nobel Peace Prize. The award was given on October 10, 1963, on the day the Partial Nuclear Test Ban Treaty entered into force. Linus Pauling became the first person in history to receive two Nobel Prizes on his own.

    Linus Carl Pauling was the eldest and only son of three children of pharmacist Herman W. Pauling and Lucy Isabelle Pauling, also the daughter of a pharmacist. Linus spent the first years of his life in Condon, in the monotonous western town of Oregon’s hinterland, where his father’s pharmacy was located. His childhood memories included cowboys, of whom one taught him how to sharpen a pencil with a knife, and Native Americans who showed him how to find and dig edible roots. These seemingly negligible lessons taught him in two ways: there was the right technique to do a job, and experienced people were valuable sources of information.

    In the primitive elementary school in Condon, his favorite subjects were arithmetic and spelling because they were only interested in right or wrong answers. Economic difficulties and the fire in the shop caused Herman to move his family to Portland in 1909. Not long after starting a new pharmacy, Pauling’s father died suddenly at the age of 33 of a perforated stomach ulcer.

    His mother, who lacked any profitable skills, borrowed heavily to buy a large house in hopes that it would enable boarders and room renters to support her and her children, but she was often in short supply of money and had health problems. Linus had to work at jobs where he delivered milk and newspapers. When he became interested in chemistry, he set up a laboratory in the basement and started doing simple experiments.

    Linus Carl Pauling and His Extraordinary Educational Background

    Linus Carl Pauling
    Over the past 58 years of marriage, Ava Helen supported his scientific work, fully undertaking housework and household responsibilities, and became the chief collaborator in “peace studies”.

    He also took all the science and mathematics courses he could at Washington High School but left without a diploma because he had not taken the mandatory American history courses (instead of those courses, he took mathematics). He later had a well-paid job in a workshop that produced cargo elevators. Her mother wanted her to give up her university plans and continue to support the family. Luckily, Linus’s friend’s father stepped in and made it possible for Belle Pauling to let her son go to OAC, which was now Oregon State University.

    Linus Pauling continued his studies in chemical engineering (the only major available for prospective chemists at the OAC) with extraordinary success, while at the same time working in a variety of jobs to support himself, his mother, and his sister. He even had to drop out of school for a year due to his mother’s financial problems. He worked as a road construction supervisor at that time, then became a quantitative analysis assistant at OAC. Around this time, he began reading articles by Gilbert Newton Lewis and Irving Langmuir on chemical bonds. While teaching chemistry to female home economics students in his senior year of school, he met his future wife, Ava Helen Miller.

    After graduating from the OAC in 1922, Pauling began his graduate education at the California Institute of Technology (commonly known as Caltech or Pauling’s preferred acronym, CIT). Along with the weighty courses he took, Linus Pauling began research under the supervision of X-ray crystallographer Roscoe Gilkey Dickinson, who directed him to the structural studies of the mineral molybdenite. They wrote an article about it because sulfur atoms in the mineral molybdenite were found to be arranged in a triangular prismatic shape around molybdenum atoms.

    Linus Pauling married Ava Helen after her first year at CIT; his husband became the main supporter of scientific research and peace efforts in the ensuing years and held this role throughout their fifty years of marriage. Pauling successfully defended his dissertation, which was based on articles about crystal structure, and got his Ph.D. in 1925.

    Determining the Nature of Chemical Bonds

    The Nature of the Chemical Bond.
    42 structural drawings describing the nature of the chemical bonds of aromatic hydrocarbon naphthalene used in the production of the moth remedy and paints prepared by Linus Pauling for his 1939 book The Nature of the Chemical Bond.

    In 1926, he received the Guggenheim Fellowship and went to Europe with his wife. There he explored the possible effects of newly discovered quantum mechanics on his work on the nature of chemical bonds—the gravitational forces that hold atoms together in a unified form. Although he also spent time at Niels Bohr’s Institute in Copenhagen and with Schrödinger at the University of Zurich, he was most influenced by the Arnold Sommerfeld Center for Theoretical Physics in Munich. He started making predictions about the properties of ionic crystals using wave mechanics, Sommerfeld’s favorite type of quantum mechanics.

    Linus Pauling returned to CIT in 1927 and began his long and successful career in X-ray studies of crystal structures such as silicate minerals. His work on crystal structures helped make this branch one of the best understood in science. Using what he knew about bond angles and distances, he came up with rules called “coordination theory” that would make it easier for crystallographers to put the right atoms in the right places in different crystals.

    During a meeting with Herman Mark in Germany in 1930, electron diffraction caught his attention. Using this technique, he and his colleagues solved the structures of many molecules in gas and liquid.

    In the 1930s, he used the energy of the displacement (or oscillation) of two electrons in the hybridization analysis (involving the mixing of atomic orbitals—the location of a particular electron in an atom). It was a revolutionary idea featured in his best-known articles on the nature of chemical bonds. Linus Pauling’s knowledge of quantum mechanics was a big part of how he came up with the valence bond theory. In this theory, he said that some molecules, like benzene, could be thought of as intermediates made up of hybrids of two or more structures in which atomic orbits overlap.

    The Nature of Chemical Bonds and the Structure of Molecules and Crystals, a book he wrote in 1939 based on the George Fisher Baker Lectures at Cornell University, is a summary of his own experimental and theoretical work as well as that of other structural chemists.

    In the mid-1930s, Linus Pauling’s interest began to shift to biological molecules; he and his colleagues conducted magnetic studies on hemoglobin to prove that the magnet attracts hemoglobin in veins but repels it in arteries. Hemoglobin was the protein molecule. That work inevitably led him to be more generally interested in proteins, such as the roles of proteins in the antibody-antigen response. He worked on the denaturation of proteins and the human immune system’s antibodies, which fight against antigens that attack in the form of bacteria or viruses.

    The Discovery of the First Molecular Disease

    This drawing (left) shows the faulty side chain (right) causing anemia by not stabilizing this part of the hemoglobin molecule.
    This drawing (left) shows the faulty side chain (right) causing anemia by not stabilizing this part of the hemoglobin molecule.

    During World War II, Linus Pauling started to focus on more practical problems, such as providing plasma supplies for wounded soldiers by producing an artificial mixture that could be used in place of blood plasma. He invented the oxygen detector based on the magnetic properties of oxygen particles. This invention was widely used in submarines and aircraft. He had also worked on explosives, rocket fuel, and ink for confidential correspondence. He refused J. Robert Oppenheimer’s offer to lead the chemistry-related arm of the atomic bomb project as he was battling a serious disease called glomerulonephritis. Towards the end of the war, Linus Pauling learned about the inherited disease sickle-cell anemia, where the red blood cells in venous blood take the shape of a sickle. He thought that this sickle shape was caused by a genetic mutation in the globin part of the cell’s hemoglobin. After three years of study, Pauling and colleagues were able to prove that such a molecular defect in hemoglobin was indeed the cause of the disease. Thus, Linus Pauling discovered the first molecular disease.

    In the post-war years, Linus Pauling continued to work on proteins. In the early 1950s, he published a cylindrical helix amino acid arrangement of amino acid groups (later called alpha helices) linked by hydrogen bonds. These and other protein structures he published were extremely effective. In addition to that work, Linus Pauling also participated in educating the public about the possible consequences of nuclear weapons. He devoted more and more time to campaigns to stop nuclear weapons testing in the atmosphere.
    In January 1958, Linus Pauling and his wife submitted to the United Nations an application signed by more than 9,000 scientists to stop the trials.

    Although United States officials wanted to undermine his efforts by confiscating his passport, they had to return it when he won the Nobel Prize in Chemistry in 1954. Throughout the rest of the 1950s and 1960s, Pauling and his wife tried to spread the word about this case around the world. For his efforts, Pauling won the Nobel Peace Prize in 1963 (his wife did not share the prize as the Nobel bureaucracy was mostly male and had not nominated her).

    Second Nobel and Vitamin C

    Linus published No More War in 1958
    Linus published No More War in 1958, in which he passionately explained the potentially terrifying consequences of nuclear war for humanity. He gave a copy of the book to everyone in the US Senate, The Senate ratified the Partial Nuclear Test Ban Treaty.

    Linus Carl Pauling left the Institute in 1963 as a result of the CIT representatives’ negative response to his peace studies and the Nobel Peace Prize. The laboratory space Pauling used for molecular medicine studies was taken away to punish him. In the mid-1960s, he was working at the Center for the Study of Democratic Institutions. His humanitarian work was supported here; he developed a theory of atomic nuclei (the theory was eventually rejected by many nuclear physicists). He needed a laboratory for his experimental research, and in 1967 he became a professor of chemistry at the University of California, San Diego. Here he dealt with the neglected potential of vitamin C to cure diseases such as the common cold. He accepted the professorship at Stanford in 1969. In 1970, he published a book called Vitamin C and the Common Cold, which had the largest readership and initiated a debate over megavitamin therapy that lasted until the end of his life.

    His view on the effects of using large amounts of vitamin C in the treatment of infections, cancer, and other diseases had been largely rejected by medical institutions. Pauling co-founded the Institute for Orthomolecular Medicine in 1973. It was later renamed the Linus Pauling Institute of Science and Medicine, and its main goal was to find evidence in the lab and in real life to backup Pauling’s ideas.

    Linus Carl Pauling’s Death and View on Life

    Linus Pauling’s institute grappled with personal and legal issues, and he faced further challenges after his wife’s death in 1981 and when he was diagnosed with prostate cancer in 1991. Despite these problems, Linus Pauling keeps working. He developed arguments, in particular, against crystallographers who violated the traditional rules he defended by considering quintet symmetric semi-crystals intrinsic.

    What he did in the last 20 years was no different than the years when he hung up tables of chemical substances and their properties on the laboratory desk in the basement of his mother’s boarding house: that is, to investigate the connections between the structures and functions of molecules not only with chemistry but with physics, biology, and medicine.

    As an atheist and reductionist, he believed in the power of science to answer any questions people might ask. For him, the universe consisted of only matter and energy. The structure of molecules had the potential to explain all physical, chemical, biological, and even psychological phenomena. He talked about the death of his wife and how it made him feel. At the same time, his cancer spread from his prostate to his intestines and then to his liver, killing him in 1994.

    He left behind a unique body of chemical knowledge that he said would lead to wealth, variety, and new discoveries.

  • Carl Linnaeus: The Botanist Who Named Nature

    Carl Linnaeus: The Botanist Who Named Nature

    Carl Linnaeus was in many ways a symbol for Swedish science in the 18th century. Not only was he one of the pioneers of Sweden’s new scientific era, but he was also very well-known internationally, so the country was of interest to scientists. Although Carl Linnaeus gained the title of nobility later in his life, he came from humble roots.

    Who Was Carl Linnaeus?

    Carl Linnaeus was born on May 23, 1707, in the Smaland countryside in southern Sweden to a family of priests and farmers. Carl soon became interested in flowers and plants thanks to his amateur botanist father, Nils, who was also the pastor of the small village community.

    After years in high school, he joined Lund University in 1727, but only a year later decided to enroll at Uppsala University. Linnaeus wanted to study medicine, but it was botany that most impressed him, which also played an important role in medicine.

    Carl Linnaeus found that this discipline was complex and uneven. His knowledge of new plants was rapidly increasing with his travels abroad. Although he tried to emulate recent systematics such as those of Aristotle, Andreas Cesalpino, Caspar Bauhin, or Joseph Pitton de Tournefort, there were always several problems.

    Some naturalists grouped the plants according to their color, some according to their size, and some according to their leaves and fruits. Eventually, Linnaeus decided to establish his own system.

    He discovered that plants have separate sexes from German Rudolf Jacob Camerarius and French Sebastien Vaillant. The stamen with pollen represented the male reproductive organs, while the pistil with ovaries represented the female reproductive organs.

    By the end of 1729, Linnaeus had written a short article in Swedish, but the title was in Latin: “Praeludia sponsaliorum plantarum” (On the prelude to the wedding of plants). He would then go even further based on his new observations.

    At that time, Uppsala’s botanical professor had grown old. Linnaeus took up the task of teaching the students and going on short tours. In the summer of 1732, he made a trip to Lapland and published his views on the trip later under the name Iter lapponicum.

    The book was published in English in 1811 and in Swedish in 1889. To become a medical doctor in Sweden, it was necessary to study abroad and get a doctorate from a foreign university.

    Linnaeus set out on this trip in 1735, arrived at the small university town of Harderwijk in the Netherlands via Hamburg and Amsterdam, and received his doctorate with a thesis on fever.

    He then traveled to Leiden to meet both the most distinguished medical expert of his time, Herman Boerhaave, and the respected botanist Johann Friedrich Gronovius. Luckily, Linnaeus got a job at George Clifford’s estate, Hartekamp, located between Leiden and Haarlem.

    Clifford was the Dutch East India Company’s wealthy director. He spent two years here taking charge of Clifford’s garden, library, and herb collection.

    Classification Systems Including Homo Sapiens

    Carl-Linnaeus. Original manuscripts of Carl Linnaeus’ article “Praeludia sponsaliorum plantarum” dated 1729.
    Original manuscripts of Carl Linnaeus’ article “Praeludia sponsaliorum plantarum” dated 1729.

    Carl Linnaeus’ research at Hartekamp was intense and enthusiastic. He was working on and publishing many manuscripts he brought from Sweden. Being supported financially and morally by both Gronovius and Clifford, his apparent talent led his patrons and supporters to compete with each other. The most important text published in this period is Systema Naturae, published in late 1735.

    He divided nature into three kingdoms on tables made of folded sheets of paper: the mineral kingdom (Regnum lapideum), the plant kingdom (Regnum vegetabile), and the animal kingdom (Regnum animale). Linnaeus placed man above the four-legged animals and called him Homo sapiens, the term he developed.

    Such a suggestion, of course, was too daring for its time and could cause discomfort. In his argument, Linnaeus explained that man is also a part of creation and belongs to the animal kingdom, not the mineral or plant kingdoms.

    He was also the first to divide the human species into races or varieties. Thus, he established a field of science called physical anthropology that could never get rid of its roughness.

    He suggested that there were five varieties of man, consisting of European, American, Asian, African, and the “monsters” or Homo monstrosus, such as the Hotantos. Considering the period, it was not surprising that the European races were considered to be at the top and Africans at the bottom.

    But the most famous of the kingdoms laid out in Systema Naturae is the plant kingdom. Carl Linnaeus especially described the sexual systems of plants, and this system was known as the Linnaeus system. In the book, he created a new system for the genitals called stamen and pistil, based on the belief that plants are sexual creatures.

    By counting the stamens and specifying their arrangement, he divided the plants into 24 groups, that is, classes, and subgroups, that is, by counting the stigmas of the pistils. Classification is divided into classes, then orders, families, and species.

    There are plants with one to ten stamens in the first ten classes; the following thirteen classes include plants with different stamen arrangements (e.g., two long and one short). The twenty-fourth grade is flowerless plants, class Cryptogamia.

    Carl Linnaeus: Engraved by Georg Dionysius and Jan Wandelaar from Hortus Cliffortianus
    Carl Linnaeus: Engraved by Georg Dionysius and Jan Wandelaar from Hortus Cliffortianus, a sheet showing Collinsonia canadensis from the mint family, native to North America.

    Linnaeus gives lively and poetic accounts of plant sexual life in the Systema Naturae, as he did in his early article on plant marriage. According to that, the first flower in the first class is monogamous; the flower in the eighth class has one female and eight male bridal chambers; and in the fourteenth class, there is one woman and four males, two short and two tall. Some were disturbed by this frankness. Nevertheless, the sexual system was accepted and gained great importance.

    Carl Linnaeus had given botanists a common language. Systema Naturae was reprinted many times during his lifetime. The last self-published edition is the 12th edition from 1766–68; at that time, the original 13 pages were expanded into three languages.

    Although Linnaeus’s sexual system is not used in advanced science today, it is still used in basic manuals. The Linnaeus system was not intended to represent natural groups but to be used only for diagnosis. During his three years in the Netherlands, his productivity was incredible.

    Besides Systema Naturae and other small works, he published eight large studies, mostly on the extensions and implementations of sexual systems.

    He did an impressive job of describing the flowers in the Clifford garden, named Hortus Cliffortianus. Then came his original work. In his book Fundamenta botanica (Foundations of Botany), he explained the underlying method of specifying the plants into species, teams, and classes in his system.

    Critica Botanica (Critique of Botany) presented the rules for the nomenclature of species. The Genera Plantarum (general plants) defines all the plant families he was concerned with until then, divides them into classes and orders, and describes all botanical systems from Cesalpino to his own. In the summer of 1736, he found the opportunity to travel to England at Clifford’s expense.

    In London, he met Sir Hans Sloane, who was the chairman of the Royal Society after Newton, and the German botanist Johann Jacob Dillenius at Oxford.

    Carl Linnaeus returned to Sweden in June 1738 and never left the country. He settled in Stockholm and worked as a medical doctor. In 1741, he became a professor at Uppsala University and was appointed as the court physician. In 1758, he bought the Hammarby farm outside of Uppsala. In 1762, he was given the title of nobility and the name von Linne.

    Naming the Natural World

    Systema naturae, one of the greatest works in natural science history.
    Systema Naturae, one of the greatest works in natural science history.

    If the sexual system in Systema Naturae was Linnaeus’ first great achievement, the latter should be Species plantarum (species of plants), which is considered the starting point of the modern botanical nomenclature of 1751 that deals with the species of plants.

    It contains approximately 8000 plant species, which were all known at the time. How they are recorded is just as important.

    Here, Carl Linnaeus suggests using a binary naming system with a first name and a surname for all species. Previously, the species was given a family name followed by a long description.

    Now Linnaeus could clearly identify a plant with just two words. The first, the surname, indicates the genus, and the second, the genre; for example, Sinapis arvensis is wild mustard.

    The names were not given by coincidence. Genus names were often attached to the name of a famous botanist. For example, Linnaeus’ colleague Gronovius named an ordinary plant in Sweden called Linnaea borealis after Linnaeus, while borealis meant north.

    Linnaeus found it appropriate because he himself was “humble and unpretentious” like the flower, but perhaps not all of his colleagues agreed on this.

    His third important contribution was the way he described plants. He described the most difficult species precisely and offered terminology for the parts that identify the plants.

    He had sharp eyes that easily noticed small details, and his definitions were always clear and concise, explaining the essentials in a few words. Carl Linnaeus pursued his passion for classification to its logical conclusion.

    Science Based on Faith

    Carl Linnaeus flower, which he would later call Peloria
    Carl Linnaeus had to think for a while about this flower, which he would later call Peloria. Because the plant was a hybrid, it took him time to convince himself.

    Linnaeus’ view of nature was based on his religious beliefs. According to him, the universe had a fixed structure. Species were fixed and unchanging. The number of species has been the same since creation. God created all species in their exact present forms.

    After this act of creation, everything naturally emerged from the seed or egg. Carl Linnaeus often quoted the Latin phrase “Omne vivum ex ovo,” “all life [is] from life.”

    These words indicated that he did not accept the idea of the primordial soup or the belief that some flies were derived from animal carcasses. But after a while, Linnaeus had to question the idea of the stability of species.

    He saw a new plant that he would later name Peloria and first thought it was a decayed specimen of Linaria vulgaris. He later realized, however, that it was a hybrid, the result of a cross between the two species.

    Confused, in his 1744 treatise, he described the plant as Peloria and attempted to explain why it did not fit into the classification system. Since he had to admit that hybridity is a phenomenon, he thought that all species in a family came from the same parent form.

    Despite his clear academic manner, Linnaeus was never one of those armchair thinkers who were disconnected from nature. Nobody could describe the beauty of nature like him, and no one could celebrate the closeness of the Creator like him.

    God was everywhere in creation, and the scientist was obliged to show this. Carl Linnaeus thus followed Aristotle’s idea of the “chain of being,” catena naturae: everything in creation was arranged as angels at the top, humans, animals, plants, and inanimate matter at the bottom. There were no gaps in creation; therefore, Carl Linnaeus said, “Nature does not make jumps.”

    The Economy of Nature

    Oeconomia naturae (The economy of nature).
    Oeconomia naturae (The economy of nature).

    The Divine Order could be described in another way, by some kind of state of equilibrium. Carl Linnaeus discussed this in his Oeconomia naturae (The Economy of Nature), published in 1749. All living things depend on each other for survival.

    The defeat and death of an individual always benefit another. What happens is a “war of all against all.” Carl Linnaeus, therefore, believed that in societies, wars broke out in the most populous areas, thereby limiting population growth.

    Nature exhibits order and balance in a variety of ways. Linnaeus never stopped repeating the geographical distribution of plants and animals. Different lifestyles require different environments.

    God had established different climates and environments on Earth in which all creatures could be satisfied. Due to his thoughts on distinct plants and their demanding special conditions for their survival, Carl Linnaeus can therefore be regarded as the forerunner of what we now call “ecological thinking.”

    Another interesting aspect of Linnaeus was his interest in common folk beliefs and mysticism. Carl Linnaeus lived in the middle of the 18th century, when rationally enlightened belief was spreading throughout Europe, but he could be quite old-fashioned in some ways.

    He believed, for example, that swallows spend the winter at the bottom of the sea. Nevertheless, he never experimented by putting a swallow underwater.

    He was warm to numerology and the idea that people went through twelve periods of seven years each, such as the child losing his milk teeth at the age of seven and entering puberty at the age of fourteen.

    Carl Linnaeus and His “Apostles”

    Linnaeus also wrote a study on various creatures from the animal kingdom. These included not only chimpanzees and orangutans but also some animals, such as cavemen and tailed men. Of course, Linnaeus had never seen these fantasy creatures; he had only heard or read about them.

    However, that did not prevent him from publishing pictures of them. While Linnaeus behaved like a rational scientist by placing man in the animal kingdom, he also believed in superstitious folk beliefs.

    Linnaeus had a special relationship with his disciples. He looks at them, speaks affectionately about them, and sends them into the world to discover rare plants.

    He called them “the apostles.” He had a desire to learn as much as possible about the created world, mostly about all plants and animals. He sent his apostles to every corner of the world, from Iceland in the north to Australia in the south, from Japan in the east to America in the west.

    They brought what they found home to their master in Uppsala; they wrote letters and reports to him and published their findings in scientific journals and books.

    Carl Linnaeus did not even go to Europe in his adult years but continued to study nature in every corner of the world through his apostles. In the last four years of his life, Linnaeus was unable to do any scientific work due to two strokes that left him semi-paralyzed. He died at the age of 71 at his home in Uppsala, quite old for his time.

    FAQ

    What was Carl Linnaeus’ contribution to the field of taxonomy?

    Carl Linnaeus is considered to be the father of modern taxonomy. He developed a hierarchical system of classification that is still used today, which is based on similarities in physical characteristics among organisms. He also developed the binomial system of nomenclature, which is still used today to name and classify organisms.

    How did Carl Linnaeus’ work influence the scientific community during his time?

    Carl Linnaeus’ work had a significant impact on the scientific community during his time. His development of a systematic approach to naming and classifying organisms helped to standardize the way in which scientists discussed and studied the natural world. His ideas were widely accepted and used throughout Europe, and his system of classification remains an important tool in biology today.

    What was Carl Linnaeus’ impact on the field of botany?

    Carl Linnaeus is considered to be one of the most important figures in the history of botany. His classification system was based on the physical characteristics of plants, which helped simplify the study of botany. He also introduced the use of Latin as the international language for scientific names, which is still used today.

    How did Carl Linnaeus’ work on the natural world relate to his religious beliefs?

    Carl Linnaeus was deeply religious, and he believed that the study of the natural world was a way to understand God’s creation. He believed that each organism had a purpose and that the study of nature was a way to better understand God’s plan.

    What is the legacy of Carl Linnaeus today?

    Carl Linnaeus’ legacy can be seen in his enduring contributions to the field of biology. His system of classification and nomenclature is still widely used today, and his ideas have influenced generations of scientists. He is also remembered as a pioneer in the field of ecology, and his work helped to establish the importance of understanding the relationships between organisms and their environment.

    References

    1. Braziel, Jana Evans (2007). “Genre, race, erasure: a genealogical critique of “American” autobiography”.
    2. Anderson, Margaret J. (1997). Carl Linnaeus: Father of Classification. United States: Enslow Publishers. ISBN 978-0-89490-786-9.
    3. Broberg, Gunnar (2008). “The Dragonslayer”Tijdschrift voor Skandinavistiek.
    4. Davis, P.H.; Heywood, V H. (1973). Principles of Angiosperm Taxonomy. Huntington, New York: Robert E. Krieger Publishing Company.
  • Alan Turing: The Father of Modern Computer Science

    Alan Turing: The Father of Modern Computer Science

    What were Alan Turing’s major contributions to the field of mathematics?

    Alan Turing made significant contributions to the field of mathematics, including his invention of the Universal Turing Machine, a theoretical device that is widely considered to be the precursor to modern computers. He also made important contributions to the fields of logic, computability theory, and artificial intelligence, among others.

    How did Alan Turing’s work during World War II impact the outcome of the war?

    Alan Turing’s work in breaking the German Enigma code during World War II played a crucial role in Allied victory. His decryption of encrypted messages allowed the Allies to anticipate and disrupt German military movements, ultimately leading to the defeat of Germany.

    What was Alan Turing’s role in the development of early computers?

    Alan Turing is often considered to be one of the founding fathers of modern computing. His invention of the Universal Turing Machine laid the groundwork for the development of digital computers, and his work on algorithms and machine intelligence helped to shape the field of computer science.

    What challenges did Alan Turing face during his lifetime?

    Alan Turing faced numerous challenges during his lifetime, including discrimination for his homosexuality, which was illegal in England at the time. He was convicted of homosexuality in 1952 and forced to undergo chemical castration. He died two years later, and it is widely believed that his death by suicide was a result of the treatment he received.

    What is the significance of the Turing Test in the field of artificial intelligence?

    The Turing Test, which was proposed by Alan Turing in 1950, is a test of a machine’s ability to exhibit intelligent behavior that is indistinguishable from that of a human. The test has been widely used in the field of artificial intelligence as a benchmark for evaluating the intelligence of machines. The Turing Test has played a significant role in shaping the development of artificial intelligence, and it remains an important topic of research and debate in the field today.

    Alan Turing deserves to be called the father of modern computer science. In the years before World War II, he built the theoretical infrastructure for multipurpose machines that formed models for the computer in its most general shape. His seminal 1936 essay, “On Computable Numbers, with an Application to the Entscheidungsproblem,” was later realized as the way he foretold what modern computers can do. During the war, he helped to develop computing devices that were said to shorten the war by two years by deciphering encrypted enemy messages that were thought to be indecipherable. Unlike some theorists, he was also willing to work on practical issues. Thus, he was happy to use a soldering iron in the same way he was grappling with a math problem: by approaching it from a unique angle.

    Who was Alan Turing?

    Alan Mathison Turing was born on June 23, 1912. His father was a civil servant in India. His parents returned to Maida Vale, London, England, before his birth. At the age of 14, he was sent to Sherborne School, the traditional public school in Dorset, South England. Alan’s interest in science was noticed by the teachers at the school, but he did not find any support in this conservative institution. For example, before learning calculus, he was able to solve advanced mathematical problems developed with the first principles. At the age of 16, he came across Albert Einstein‘s work and understood it. While at school, he became intimate with a student, but his friend died during their last term at Sherborne. This event had a traumatic effect on Alan, and he lost all religious beliefs quickly. Over time, he became an atheist.

    Alan Turing continued his education by attending King’s College, Cambridge, from 1931 to 1934, where he graduated with honors. He was later chosen as an academic member of the college. In 1936, he delivered his groundbreaking article on computable numbers that would form the basis of his career. This article describes the concept of a machine that can perform calculations, especially a universal machine that can calculate a wide variety of mathematical problems. Turing’s idea of universality has transformed into the concept of “programmability in computers” today. In a 1939 article, in the context of the human-computer, he stated, “A man provided with paper, pencil, and eraser and subject to strict discipline is in effect a universal machine.

    Turing’s efforts enhanced German mathematician Kurt Gödel’s research in 1931 and led to the use of the term “Turing machine” for this universal machine. Alan Turing showed that this type of machine can perform any mathematical calculation that can be expressed with an algorithm. The Entscheidungsproblem, which he mentions in his 1936 article, was the mathematical problem of whether there is always an algorithm that could judge the correctness or falsity of a mathematical proposition, put forward by German mathematician David Hilbert in 1928.

    Church-Turing thesis

    The three-wheel Enigma cipher that the Germans thought produced an unsolvable cipher and therefore used for their military plans.
    The three-wheel Enigma cipher that the Germans thought produced an unsolvable cipher and therefore used for their military plans.

    Alan Turing also demonstrated the unsolvability of the problem by showing the impossibility of algorithmically determining the capabilities of any particular Turing machine. This notion, known today as the stopping problem, is a troubling issue for mathematicians. The Turing machine has remained an important concept in computability theory to this day. Although an abstract concept (Turing did not originally think of making such a machine), it could actually be done, which predicted many aspects of contemporary computer features and processes, such as input, output, memory, and programming. Alan Turing completed his doctorate in a remarkably short period, working from 1936 to 1938 at Princeton University under the supervision of American mathematician Alonzo Crunch.

    They had previously developed the Church-Turing thesis, which described the nature of computability apart from Alan’s thesis, arguing that any effectively computable function produced by any means can also be calculated using the Turing machine. Although the thesis cannot be proven, it is generally accepted by mathematicians and theoretical computer scientists. Turing returned to Cambridge and attended the philosopher Ludwig Wittgenstein’s lectures on the fundamentals of mathematics. Wittgenstein said that math didn’t find the truth; it made it up, but Turing didn’t agree with this.

    Decryption

    Hut 6 machine room in Bletchley Park. This is where the British were trying to decrypt the enigma codes of the German army and air force.
    Hut 6 machine room in Bletchley Park. This is where the British were trying to decrypt the enigma codes of the German army and air force.

    The war brought a radical but accidental change in the direction of Turing’s career. His unique talent in math was spotted while at Cambridge, and he was invited to join Bletchley Park, the secret center of England’s efforts to crack German codes. He first started working part-time at the Government Code and Cypher School (now Government Communication Headquarters, GCHO) and then switched to working full-time.

    The manual decryption process was both difficult and lengthy for a country facing an approaching enemy. Alan Turing realized that, when combined with a human’s unlimited creativity, machines could solve problems much faster and more reliably. Before the war, he had already helped try to figure out how the Germans encrypted their messages with the Enigma machine.

    A few weeks after joining, he set up a machine that could help decrypt Enigma. His solution was named bombe after the earlier Polish device called bomba. Bombe (called crypt) was taking a possible simple piece of the original text and passing it through the combinations of rotors and plugboards in the Enigma. The most likely arrangements produced contradictions, thus eliminating them and leaving only a few combinations for further investigation. The machine performed a mathematical proof mechanically much more effectively than a human, or even a team, could.

    What Kind of a Character was Alan Turing?

    Front view of one of Turing's original bombe machines; The bombe machines were the electromechanical tools Turing designed to decode the Enigma in Bletchley Park in 1939.
    Front view of one of Turing’s original bombe machines; The bombe machines were the electromechanical tools Turing designed to decode the Enigma in Bletchley Park in 1939.

    Alan Turing chose to work on the decoding of Enigma messages used in the Navy, and the reason for this was that “Nobody else was doing anything about it; it could be my job.” This was very typical for Alan, although he was comfortable cooperating with others. He developed new methods of decryption during his time at Bletchley Park. He often referred to them by slang names. One of them was the “Turingery” or “Turingismus,” which he developed in 1942. It was a manual calculation technique to find the string in the rotors of the Lorenz cipher machine, which the Germans used to encrypt high-level strategic orders. The British also deciphered this machine. The method was especially helpful because the information it gave was still true after a certain amount of time.

    Alan Turing’s colleagues at Bletchley Park were aware of his unusual manners. He had chained the coffee mug to the radiator so that it would not be lost or stolen. When he came to work by bicycle, he wore a gas mask to protect him from hay fever, not fear of gas. However, with the help of his contribution to the work in Bletchley Park, he developed the world’s first programmable digital electronic computer, called Colossus. Alan Turing was awarded the OBE, the Order of Chivalry, in 1945 for his efforts during the war, but his contributions remained anonymous for years.

    Tough Times for Alan

    Pilot ACE's (Automatic Computing Engine) circuits were among the first computers to store instructions, first operated in 1950 at the National Physical Laboratory, NPL.
    Pilot ACE’s (Automatic Computing Engine) circuits were among the first computers to store instructions, first operated in 1950 at the National Physical Laboratory, NPL.

    After the war, Turing took a post at the National Physical Laboratory in Teddington, West London. Here he worked on one of the first computers, the Automatic Computing Engine, or ACE. Sadly, a simplified version of the Pilot ACE was never completed due to delays and Turing’s return to Cambridge on paid leave for a year.

    He joined the University of Manchester in 1948 to study mathematics and was appointed deputy director of the university’s computer laboratory. He worked on the software of the Manchester Mark 1. Alan Turing continued to think about more theoretical and abstract ideas, one of which was artificial intelligence, investigating whether a machine could think. For the possible demonstration of the machine’s intelligence, he prepared the Turing test: for a computer to pass the test, it had to be indistinguishable from real humans when in contact with a human. Despite its presumed feasibility, this test has not yet been passed and has not lost its importance today. In fact, many variants of the test are currently in use.

    Alan Turing lived at a time when homosexuality was illegal in England. He was charged in 1952 for obscene behavior and lost his security clearance. He had given him two options: incarceration or taking female hormones for a year in the hopes of “curing.” From this point on, he studied morphogenesis in interdisciplinary mathematical biology, becoming particularly interested in the process that allows organisms to produce their forms. Most of these works were published until 1992, when his articles were compiled.

    How Did Alan Turing Die?

    Turing was found dead in his home by his maid on June 8, 1954. The cause of death was cyanide poisoning, thought to have been caused by the half-eaten apple sitting beside his bed, but the apple was never tested. It was determined that he committed suicide, but the death was likely to be an accident.

    Turing was admitted to the Royal Society in 1951, a year before he fell into disfavor. He was only truly appreciated after his death. Now there are two statues erected—one in Manchester and one in Bletchley Park. There are plaques at his birthplace in London and the house where he died in Wilmslow. The British government officially apologized for the official treatment that led Alan Turing to his death in 2009. But perhaps the most appropriate is the A.M. Turing Award, which is the equivalent of the Nobel Prize awarded each year to a leading computer scientist. Even though Turing died too young at age 41, his ideas will still be used in the field of computers in the near future.

    References

    1. Hilton, Peter. “A Century of Mathematics in America, Part 1, Reminiscences of Bletchley Park” (PDF).
    2. Hodges, Andrew (2012). Alan Turing: The Enigma. Princeton University Press. p. 87. ISBN 978-0-691-15564-7.
    3. Hilton, Peter. “NOVA | Transcripts | Decoding Nazi Secrets | PBS”.
    4. Andrew Hodges. “The Alan Turing Bibliography”. turing.org.uk. p. morphogenesis.
    5. Olinick, M. (2021). Simply Turing. United States: Simply Charly, ch. 15.
  • Andreas Vesalius: Human Body Anatomist of the Renaissance

    Andreas Vesalius: Human Body Anatomist of the Renaissance

    What Were Andreas Vesalius’ Major Contributions to the Field of Anatomy?

    Andreas Vesalius made several major contributions to the field of anatomy, including the publication of his landmark work “De humani corporis fabrica” (On the Fabric of the Human Body), which revolutionized the study of anatomy by emphasizing the importance of direct observation and dissection. He also made several important discoveries about the human body, including the fact that the heart has four chambers and that the blood circulates through the body.

    How Did Vesalius’ Approach to Anatomy Differ From the Approaches of His Predecessors?

    Vesalius emphasized the importance of direct observation and dissection of human cadavers, whereas many of his predecessors had relied on the work of ancient Greek and Roman anatomists or on animal dissections. He also encouraged his students to think critically and question established beliefs about the human body.

    How Did Vesalius’ Work Influence the Practice of Medicine During His Lifetime?

    Andreas Vesalius’ work had a significant impact on the practice of medicine during his lifetime, as it provided doctors with a more accurate and detailed understanding of the human body. His emphasis on observation and dissection also helped to establish a more rigorous and scientific approach to the study of medicine.

    What Was Vesalius’ Legacy and How Did His Work Influence Other Anatomists?

    Andreas Vesalius’ work had a profound impact on the study of anatomy and medicine, and his approach to scientific investigation helped to establish a foundation for modern medical science. His emphasis on direct observation and dissection continues to be an important aspect of anatomical study, and his work laid the groundwork for many later discoveries and advances in the field.

    What Were the Controversies Surrounding Vesalius and His Work, and How Did He Respond to Them?

    Andreas Vesalius’ work challenged many established beliefs about the human body, and he faced significant opposition from religious and political authorities who saw his work as a threat to traditional beliefs and practices. He also faced criticism from other anatomists who disagreed with his methods or conclusions. Vesalius responded to these controversies by defending his work in public lectures and by continuing to emphasize the importance of observation and dissection in the study of anatomy.

    How Did Andreas Vesalius’ Work Influence the Development of Medicine During the Renaissance?

    Andreas Vesalius’ work had a significant impact on the development of medicine during the Renaissance. His detailed and accurate descriptions of human anatomy helped to establish a new standard of anatomical knowledge and understanding. His work also contributed to the decline of reliance on traditional authorities such as Galen and the beginning of empirical observation and experimentation.

    In July 1453, Andreas Vesalius published De humani corporis fabrica (On the fabric of the human body), known as Fabrica for short. This work consisted of seven large folio books (chapters) on the skeleton, muscles, veins and arteries, nerves, reproductive and digestive organs in the abdomen, heart and lungs, brain, and sense organs. It included 73 breathtaking, realistic illustrations along with detailed Latin text. From then on, the anatomy would never stay the same.

    Who Was Andreas Vesalius?

    Rembrandt's 1632 painting, The Anatomy Lesson of Dr. Nicolaes Tulp, depicts newly appointed public anatomists to The Amsterdam Guild of Surgeons, wealthy members of the guild paid to be featured in the painting; the cadaver was the body of Aris Kint, who was executed for stealing a coat before being punished one last time with dissection.
    Rembrandt’s 1632 painting, The Anatomy Lesson of Dr. Nicolaes Tulp, depicts newly appointed public anatomists to The Amsterdam Guild of Surgeons, wealthy members of the guild paid to be featured in the painting; the cadaver was the body of Aris Kint, who was executed for stealing a coat before being punished one last time with dissection.

    Vesalius was born in Brussels, then part of the Habsburg Netherlands, into a family with strong formal connections: his father was a court pharmacist of the Holy Roman Emperor Charles V; his mother was the daughter of a wealthy government official. Vesalius received a good education in favorable conditions at the University of Leuven, benefiting from the progressive humanism of Erasmus of Rotterdam. Erasmus favored the study of original texts—which came to Europe at the beginning of the Renaissance—in their primary languages (classical Latin, Greek, and Hebrew) instead of translations filtered through generations of Islamic scholars and medieval scholars. Because the same mistakes were copied over and over, and because people tried to update the language, the meaning was probably changed.

    Vesalius’ interest in anatomy continued in Leuven. There he spent the night outside the city walls with an anatomist-inclined friend, collecting the bones of executed bodies and sneaking them into the city. This madness resulted in an extremely valuable skeleton that was almost complete. Excesses like this were necessary as dead bodies were difficult to find, the training centers had no skeletons, and Andreas Vesalius believed the body was the main source of anatomical knowledge. He finished his undergraduate thesis, which was published in 1537, and kept studying anatomy until 1538, when he moved to Italy.

    In September 1537, Vesalius arrived in Padua. He received his doctorate on December 5. He was offered to lecture in surgery and anatomy by one of Europe’s most renowned medical schools. Vesalius began dissecting in front of his students the very next day.

    The Making of the Fabrica

    Andreas Vesalius reveals the human body in all its layers in Fabrica.
    Andreas Vesalius reveals the human body in all its layers in Fabrica. This entire skeleton is shown leaning against the shovel, which it may have dug its own grave to clean up the remains of the dissection.

    Under the protection of the Duchy of Venice, the University of Padova was one of the leading institutions of medical and surgical education. Performing at least one dissection per year in medical school—a process that took three weeks during the winter—attracted students interested in the new observational anatomy. The organs in the abdomen and then the thorax were examined. Then the head and brain, and finally the arms and legs, were studied. This ancient practice was better for the durability of cadavers. Vesalius brought two necessary pedagogical innovations to Padova, which were evident in his Fabrica.

    Unlike his contemporaries, Vesalius held the knife himself, combining teaching, showing, and cutting. He refused to teach from the lectern and did not read from any other book than his body. Moreover, he did not avoid obsolete anatomical literature. His humanistic approach led him further back to the well-respected 2nd-century authority Galenos of Pergamon (Galen), rather than interpretations of Galen, such as Mondino de Luzzi’s popular 14th-century Anathomia.

    Galen advised his readers to make visual comparisons between what was written and what was directly observed. Vesalius was already experienced enough to realize that Galen had acquired some of his knowledge from animals and therefore contained factual errors; these were topics to be discussed with the students. However, he continues to use animal bodies as he deems necessary.

    The Tabulae for Students

    Veins and liver from Tabula anatomicae sex, 1538, one of the six auxiliary drawings Vesalius used in his early lectures.
    Veins and liver from Tabula anatomicae sex, 1538, one of the six auxiliary drawings Andreas Vesalius used in his early lectures.

    Among many other difficulties, the systems running throughout the body, such as veins and arteries, had to be reconstructed part by part after dissection (following in the footsteps of Galenos, Vesalius manually picked these up as two different systems based on the liver and heart). Vesalius prepared one-to-one drawings to accompany the dissection to help his students envision the system. These drawings were later used in the Tabulae anatomicae sex of 1538; the six illustrations in the book were published in poster form and accompanied by explanatory texts.

    The illustrations of the Tabulae were created by Vesalius and his Dutch friend, the painter Jan van Calcar. Calcar had been a student of the great Italian painter Titian in his studio in Venice. It was a great coincidence that Padova was close to one of the world’s leading art centers. The Tabulae became a great success. This is evident from the extensive and serial plagiarism that follows. What really pleased Vesalius was the proposal that the bodies of executed criminals be delivered to him in Padova.

    In January 1540, he was summoned to Bologna to share his new method of teaching anatomy. In a presentation before an audience of about 200 people at the church of San Francesco, Vesalius was cutting the cadaver and clashed with Professor Matteo Corti, who was in charge of anatomy and reading Mondino’s Anathomia. The aging Corti despised such manual work, but Vesalius publicly corrected an error in Corti, Mondino, and Galenos and his Tabulae: the liver lacked five lobes.

    Andreas Vesalius spent the next two years working on the Fabrica. He was reading Galenos and had a painter with him while he worked at the anatomy table. The drawings were made into highly detailed woodblock prints, often by gluing and traversing the painting into the wood. Woodblock printing was a great innovation in the field of printing. As it works like printing press letters, it could be printed on a page with ease. Aside from the importance of his classical Latin text, what stood out were the drawings that closely resembled reality and the imagery that gave Fabrica its essential splendor.

    The Making of the Epitome

    The identity of his painter, known to have come from Titian’s workshop, is unknown, but his contributions were enormous. Fabrica‘s cover page is a powerful symbol of the new Vesalius science of anatomy. The arrays of human skeletons and muscle structures are breathtaking. Each of the fourteen muscular man drawings is shown in an ongoing panoramic view, all skinned and given a stance that makes them appear as if they are still alive, even though they are all cut in layers.

    After Andreas Vesalius oversaw the production process and Fabrica‘s pages were being prepared, he left Padova to go to Basel to work with the humanist teacher and publisher Oporinus. Oporinus was known for its print quality. His skill manifested itself when the book finally came out. Fabrica was the triumph of Renaissance humanism. However, it was also an expensive and luxurious piece, not something a student could afford to buy or something an on-the-job anatomist would want to touch with bloody hands. The simultaneous publication of the cheaper and shorter Suorum de humani corporis fabrica librorum epitome filled this market gap.

    Some of the epitome’s dynamic leaflets were designed to be cut into pieces, and there were full-length body drawings of organs superimposed on one another. Thus, various pictures could be made in the form of flap anatomy that was popular at the time. The second corrected edition of Fabrica was printed in 1555. Vesalius spent the rest of his life in the service of Emperor Charles V, to whom Fabrica was dedicated, but planned to return to Padova before his death on the island of Zakynthos.

    After Andreas Vesalius’ Death

    Fabrica was simple to read and understand; this was and continues to be the book’s strength. Earlier anatomy books had few illustrations, and they were usually schematic representations of text. They were not images of what could be seen on the body, but drawings to aid in remembering. Vesalius was part of the Renaissance tradition of developing anatomical knowledge and description, but his work was a dramatic leap forward. Apart from the five-lobed liver, he corrected various anatomical errors: humans do not have rete mirable, unlike some other vertebrates (compounds of veins and arteries very close to each other); the chambers of the heart do not have pores for blood to pass through.

    Vesalius’ drawings were often copied and reused in subsequent texts throughout the century. His realistic drawings could easily be corrected as new information became available. Traditionalists vilified the 28-year-old Vesalius for criticizing Galenos, but his encouragement to look at the body to find knowledge instead of the books resonated throughout Europe. Andreas Vesalius introduced the method of studying nature in anatomy, which had only recently been adopted in other observational sciences such as botany and geography. Fabrica has redefined the way we learn, teach, and think about what’s under our skin.

    References

    1. O’Malley, Charles Donald. Andreas Vesalius of Brussels, 1514–1564. Berkeley : University of California Press, 1964.
    2. Andreas Vesalius, De humani corporis fabrica (1544), Book II, Ch. 24, 268. ISBN 0-19-858409-1.
    3. Porter, Roy, ed. VesaliusThe Biographical Dictionary of Scientists. 2nd Ed. New York: Oxford University P, 1994.