INTRODUCTION MANY causes have been assigned for the stock market crash of 1929. These usually take the form of putting the blame on different individuals or groups. United States Senator Robinson of Arkan- sas blames President Hoover, Secretary Mellon and Ex-President Coolidge for their “unduly optimistic statements’ about business conditions, which he says, worked the country into a fever of speculation. But United States Senator Robinson, Republican, of In- diana, praises the administration, and holds that John J. Raskob, Chairman of the Democratic National Committee, was among those who were “psychologically” responsible for the collapse, by urging people to buy stocks. Senator Glass blames the “stock gamblers.” The Reverend John Haynes Holmes holds the brokers and their unholy ways responsible. A prominent banker ascribes the Wall Street crash largely to the blocking of the Tariff Bill in Congress. New York State Senator Hastings finds the cause in those who “sold short.” Congressman Clyde Kelly blames “this nation-wide gambling house which is called the New York Stock Exchange.” Mr. Daniel W. Blumenthal finds implicated in the panic certain brokers “who successfully carried