This book includes fourteen chapters. The first five are concerned with microscopy, sterilization and disinfection, glassware, culture mediums and cultivation, isolation and general technic. Other chapters are devoted to the use of laboratory animals, serologic technic, viruses, yeasts and molds, sanitation, biologic products, specimens and classification. Finally, the last chapter, occupying one hundred and sixty pages, is entitled "Diseases." Under this chapter some sixty-seven diseases are discussed, and for each disease a brief clinical description and the causative agent are given followed by a discussion of the. specimens to be taken, the laboratory procedures to be followed and the significant laboratory data to be included in reports. The material is well organized and the tables and illustrations are well chosen. This book should prove helpful to clinicians, public health workers and sanitary inspectors as well as students and laboratory technicians in medical bacteriology.