Abstracts of Technical Articles from Bell System Sources (01 January 1939)

Early days of science, the elementary particles which scientists and philosophers alike saw fit to postulate were always imagined as chargeless. With the remarkable growth of the understanding of electricity during the nineteenth century, and with the invention of instruments for detecting small charged particles during the twentieth, it became the custom to suppose that the fundamental particles of 1 Indus. & Etigg. Chem., Aval. Ed., October 15, 1938. 'Amer. Phil. Soc. Proc., September 30, 1938.