AN illustrated descriptive programme is now available of the Eighth American Scientific Congress, to be held in Washington, D.C., during May 10-18 (see NATURE, December 23, 1939, p. 1056). The Congress will be opened by President Roosevelt on May 10; and the first plenary session takes place on May 13. Sectional meetings of the eleven sections occupy the remainder of the week, and the final plenary session will be on May 17. Government delegates of the other American Republics will be entertained by the United States Government at an official luncheon and at a banquet. The headquarters of the Congress will be at the Pan American Union, Washington.