[127]

Cunningham and MacMunn, Phil. Trans. 184, 1893, p. 765, where references to many other papers are given.

[128]

Ablette is the French name for the Bleak.

[129]

Either singly or in combination with lime (Guaninkalk), guanin is often present in the tissues of Fishes (air-bladder, gall-bladder, subcutaneous connective tissue, muscle-fasciae, peritoneum, and the retinal epithelium and tapetum of the eye). For references see Cunningham and MacMunn, op. cit. p. 781 et seq.

[130]

Cunningham and MacMunn, op. cit. pp. 768 and 771.

[131]

A. Agassiz, Bull. Mus. Comp. Zool., Camb. U.S.A., xxiii. 1892, p. 189.