In two stately volumes published under the auspices of the British Fellowship of Medicine, the editors have prepared a system of tropical medicine to which practically all of the great English-speaking authorities of the world have contributed. The first volume is divided into six sections concerning hygiene and tropical sanitation, nursing, entomology, laboratory methods, snakes and snake poisoning, and toxicology. The second volume includes sections on differential diagnosis, bacterial diseases, and spirochetal and protozoal diseases. All of the articles are well worked up and profusely illustrated; the numerous color plates of tropical insects, snakes and plants being an exceedingly valuable feature. There are sixty-six color plates and almost 600 halftones and outline drawings in the two volumes. The American contributors include Bailey K. Ashford, who writes on "Ankylostomiasis"; C. C. Bass, "Rat-Bite Fever"; George E. Bushnell, "Tuberculosis in the Tropics"; H. R. Carter, "Yellow Fever"; C. F. Craig, "Imperfectly Differentiated