What is the X in X-mas?
Lyon Ly·on (lī'ən), Mary Francis. Born 1925.
British geneticist whose research on mice led to her formulation of the Lyon hypothesis.
Hamilton Ham·il·ton (hām'əl-tən), Alice. 1869-1970.
American toxicologist and physician known for her research on occupational poisons and her book Industrial Poisons in the United States (1925).