A.Weil. Internal secretion. Translated from the 2nd German edition by Guliaeva, ed. by Koltsov. 141 pp. 45 figs. 1923. Gosizd. Moscow-Petrograd. Price 1 rub. 25 kop.

In view of the increasing interest in issues of internal secretion, Weilʹa's book deserves exceptional attention. Any physician who wishes to keep abreast of current scientific trends will find a wealth of interesting material here. In spite of its small circumference, the book provides an almost exhaustive review of the current literature on the doctrine of the internal coordination of organisms. The presentation is concise, precise, clear, and at the same time original.