Unlike the former volumes of the series, no summary by the editorial board appears in this one. The omission is symptomatic of the present status of research on this subject. The articles are all suggestive, and, enlivened by the appended discussions, make interesting reading. But, excepting certain conclusions derived through experiments on the heredity of animals, they add little of importance to our previous knowledge. Nevertheless, as an authentic crosssection of the facts available to date this volume is well worth reading and possessing.
The book is divided into five parts. Chapter 1 is devoted to a general statement of the problem (Timme), to definition of terms (Dana) and a review of the significant biologic research (Metz). Timme in his presidential address notes chiefly a parallelism as regards low blood sugar in abnormally rapid growth, epilepsy and migraine, and suggests an hereditary underlying factor, primarily anatomic, that crowds the hypophysis