[3]

Guthrie, Phil. Mag., 4th Series, xlix., pp. 1, 206, 266; 5th Series, i., pp. 49, 354, 446, vi., p. 35.

[4]

F. Guthrie, Phil. Mag. [5], xvii., p. 469; F.B. Guthrie, Journ. Chem. Soc,. 1885, p. 94.

[5]

Comptes Rendus, 1883, 2, p. 45.

[6]

Phil. Mag., 5th Series, xvii., p. 462.

[7]

Dingler's Polyt. Jour., 162, p. 217; Jahresberichte, 1861, p. 279.