Washington: American Chemical Society. Illus. IN: J. Amer. Chem. Soc., Vol. 41, No. 6, pp. 868- 934. (June, 1919). Also: Isosterism and Covalence. IN: J. Amer. Chem. Soc., Vol. 41, No. 10, pp. 1543-1559. (Oct., 1919). Also: The Octet Theory of Valence and Its Applications with Special Reference to Organic Nitrogen Compounds. Illus. IN: J. Amer. Chem. Soc., Vol. 42, No. 2, pp. 274-292. (Feb., 1920). Also: Radiation as a Factor in Chemical Action. IN: J. Amer. Chem. Soc., Vol. 42, No. 11, pp. 2190- 2205. (November, 1920). Four issues of the periodical, 8vo, orig. wrappers, (fragile, chipped, and detached from some copies either completely or in part), as issued. Very good.
Langmuir's theory of valence, called octet theory, was based on Gilbert N. Lewis's theory of the cubical atom. Three of the present papers are devoted to this subject and closely interrelated. The fourth one is on the radiation theory. Langmuir (1881-1957) received the Nobel Prize in Chemistry in 1932.