x - Franklin Delano Roosevelt is seized by polio
x - Hermann Rorschach first describes his inkblot test for studying human personality, in his tome Psychodiagnostics, in Switzerland.
x - The B-C-G tuberculosis vaccine is developed and tested by Albert Calmete and Camille Guerin in France.
x - U.S. biologist Thomas Hunt Morgan first forwards theory that chromosomes carry hereditary information.
x - Aldous Huxley's first novel Chrome Yellow is published.
x - Psychiatrist Carl Jung publishes in Switzerland one of his most influential works Psychological Types, which introduces concepts such as the introvert and extrovert personality types.
x - Rafael Sabatini's adventure novel Scaramouche is a bestseller.
x - The new Czechoslovak Republic recognizes Roma as a separate "nationality." This legislation is later repealed.
x - Major treaties signed at Washington Disarmament Conference limit naval tonnage and pledge to respect territorial integrity of China.
x - Klu Klux Klan violence throughout southern US
x - The Imperial Bank formed in India by the merger of the three presidency banks. Some of the relevant recommendations of the Chamberlain Report of 1913 are partly and belatedly put into effect.
x - Oil is discovered at Signal Hill, near Long Beach. California soon becomes the leading oil producing state in the union.
x - AFL institutes an information and publicity service.
x - Building Service Employees Union organizes.
x - Bill Haywood skips bail and flees to Russia where he eventually dies on may 28 1928.
x - The Motion Picture Producers and Distributors of America (later The Motion Picture Association of America) is created.
x - John Larson invents the polygrapgh in nova scotia
x - Picasso's Three Musicians
x - Quartz crystals keep radio signals from wandering.
x - The word 'robot' coined by Capek
x - Western Union begins wirephoto service.
x - Great destruction of cotton crops by boll weevil
x - Veterans' Bureau created
x - Cooper-Volstead Act
x - Table tennis finds renewed popularity.
x - Coco Chanel introduces her signature fragrance, Chanel No. 5, in France.
x - D.H. Lawrence publishes Women in Love.
x - Sergei Prokofiev composes The Love for Three Oranges opera in France.
x - Modern artist/photographer/sculptor Man Ray creates his first "rayographs," photos made without a camera by placing objects directly on film and exposing it to light, in Paris.
x - Reparations Commission fixes German liability at 132 billion gold marks.
x - Irac gains formal independence from Britian.
x - Stanley Baldwin enters Great Britian cabinet as president of the Board of Trade.
x - Agnes Campbell MacPhail becomes the first woman elected to the Canadian House of Commons.
x - Two birth control advocacy groups combine to form the American Birth Control League, which eventually becomes Planned Parenthood.
x - Soviet leaders establish the Red International, or Profintern, an international trade union organization.
x - Boston banned The Birth of a Nation
x - U.S. Steel cut wages back to the prewar 30 cents an hour
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