(Encyclopedia) Perry, Ralph Barton, 1876–1957, American realist philosopher, b. Poultney, Vt., grad. Princeton (B.A., 1896) and Harvard (Ph.D., 1899). He taught at Harvard from 1902, becoming…
(Encyclopedia) Perry, William James, 1927–, U.S. government official, b. Vandergrift, Pa. A Ph.D. in mathematics, former Stanford engineering professor, and founder of a military electronics firm, he…
(Encyclopedia) katydid, common name of certain large, singing, winged insects belonging to the long-horned grasshopper family (Tettigoniidae) in the order Orthoptera. Katydids are green or,…
