[69] Rays of Positive Electricity (1913), p. 46.

[70] Phil. Mag., IV (1828), 161.

[71] Revue des questions scientifiques, Louvain, VII (1880), 5.

[72] Ibid., II (1877), 319.

[73] Dinglers polyt. Jour., CCXXXIX (1881), 325.

[74] Jour. de Phys., VII (1888), 561; Comptes rendus, CIX (1889), 102.

[75] Ann. d. Phys. (4), XVII (1905), 549; XIX (1906), 371; XXII (1907), 569.

[76] Comptes rendus, CXLVI (1908), 530.

[77] Ibid., p. 967; CXLVII (1908), 475, 530, 594; CLII (1911), 1380, 1569; see also Perrin, Brownian Movements and Molecular Reality, Engl. tr. by Soddy, 1912.

[78] Ann. der Phys., IV (1906), 21, 756.