Barus, Carl, 1856-1935. Experiments with ionized air by Carl Barus. - Washington, Smithsonian Institution, 1901. - x, 95 p. illus., diagrs. 34 cm. - Smithsonian contributions to knowledge, v. 29, art. 7 . - Smithsonian Institution publication 1309. . At head of title: Hodgkins Fund. LCCN: s 13000112 Subjects--Topical Terms: Physics.Ionization of gases. LC Class. No.: Q11 / .S68