Carroll M. Williams, 74, a Harvard University biologist who worked out the fundamental principles of how insects develop from eggs through successive larval stages into adults, died of lymphoma Oct. 11 in Watertown, Mass. A pioneer in insect physiology, he discovered the basics of juvenile hormone, a vital molecular signal that prevents an insect from progressing to the next developmental stage too quickly, and he traced the secretion of the hormone to crucial regions in the insect's brain. An analogue of juvenile hormone is now used as a relatively safe means of pest control. He also invented novel techniques for performing insect surgery, chief among them a new type of insect anesthesia.
Charles L. Morris, 82, a pioneer in helicopter flight, died of lung cancer Oct. 12 in Saybrook, Conn. In the 1940s, Mr. Morris helped in the development of several early models as chief test pilot for helicopters at Sikorsky Aircraft in Stratford, Conn. In 1942, he flew one helicopter 761 miles in five days; it might have been a record, but wartime security regulations prohibited official documentation. He appeared on the cover of Life magazine in 1943, taught Charles Lindbergh to fly a helicopter, and demonstrated helicopter flight to Helen Keller by letting a rope attached to the aircraft rise through her hands as she stood on the ground.
Ann C. Whitman, an influential figure in the White House as personal secretary to President Dwight D. Eisenhower and later as chief of staff to Vice President Nelson A. Rockefeller, died of heart failure Tuesday at Morton Plant Hospital in Clearwater, Fla. She was 83.
Werner David Falk, 85, former chairman of philosophy at the University of North Carolina at Chapel Hill, died of heart failure Friday at the university's hospital. A Chapel Hill resident, he had specialized in ethics, value theory and political philosophy.
Harlan Smith, 67, an astronomer who recently received NASA's Distinguished Public Service medal, died of cancer Thursday in Austin, Texas. The retired director of the McDonald Observatory of the University of Texas, in the Davis Mountains of West Texas, was a pioneer in planetary radio astronomy who was credited with discovering the variability of quasars, the influence of solar wind on radio emissions from Jupiter and the existence of variable stars known as dwarf Cepheids. He was largely responsible for the joint effort of the university and the National Aeronautics and Space Administration to construct the 107-inch McDonald reflector telescope.