This well known textbook appears in its seventh edition. It is now a book of nearly 800 pages, clearly printed on good paper and containing nine full page plates and 214 engraved illustrations, most of which are well selected and well done. It is divided into three parts, Part I dealing with the general characteristics and methods of study of all pathogens; Part II with the detailed studies of individual organisms, and Part III with applied microbiology.
Part III is, in a way, the most distinctive feature of the book. In it are discussed such subjects as bacteriology of milk, water, air, soil, shell fish, etc.; also the application of vaccines and serums, where, under separate headings, these topics for the various infections are treated, as a rule, briefly. This mode of treatment necessitates the separation of subjects, natural units in themselves, and, to some degree at least, is disadvantageous.