Protozoology.

This book gives a comprehensive and authoritative presentation of modern protozoology. While protozoa are considered primarily from the biologic point of view, physicians can be fully assured that the pathogenic protozoa are not at all neglected. Professor Calkins has wisely chosen to base the book on broad biologic principles, knowledge of which is essential for the successful application of protozoologic facts to medical problems. The general organization and the physiology of protozoa; the protoplasmic age of protozoa; conjugation, maturation and fertilization of protozoa, are clearly and adequately discussed in the first part of the book, after which come chapters on parasitism (including a discussion of protozoa and the cancer problem, in which no radical views are championed), on the pathogenic flagellates, on the pathogenic hemosporidia, and on the pathogenic rhisopoda. There is a good bibliography, an author's and general index. The need that has existed for a book of this