[155] Der Gerber, 24, 570.

[156] Jour. Soc. Chem. Ind., 1893, p. 426.

[157] Der Gerber, 1895, p. 193, etc.

[158] J.S.C.I., 1897, p. 513.

[159] Ibid., 1890, p. 28.

[160] Ibid., 1893, p. 422.

[161] J.S.C.I., 1890, 27.

[162] Zeits. für Biologie, xxiv. 105.

[163] Jour. Chem. Soc., 1892, Trans. 254.

[164] Der Gerber, xvi. (368), 4.