1. 1880. Proceedings of the American Association for the Advancement of Science, August 27th see, also, American Journal of Science, vol. xx. p. 305; Journal of the American Electrical Society, vol. iii. p. 3; Journal of the Society of Telegraph Engineers and Electricians, vol. ix. p. 404;Annales de Chimie et de Physique, vol. xxi.
2. 1880. Notes on radiophony. Comptes Rendus, Dec. 6 and 13 and Feb. 21 and 28, 1881; Phil. Mag. Jan. 1881, p. 78. See alsoJournal de Physique, vol. x. p. 53.