at low velocity but retained the seat till 1906, when he was awarded the Legion of Honour. Membre de PAcadémie des Sciences, vol. 60, p. 125 (1925). 3 O. W. Richardson, Roy. Soc. (A), vol. 107, pp. 422-451 (1925). 5 Fhid., vol. 109, p. 7 (1925). 764 The Magneton and