In the present edition this excellent book has been revised and brought up to date. Among the eighteen chapters, those dealing with diphtheria, typhoid and paratyphoid fevers and scarlet fever are exceptionally complete and instructive. There are two chapters which were not present in former editions. One concerns erysipelas and the other isolation methods. Each disease has a historical introduction which adds interest to the topic, and the chapters are concluded with ample references. Throughout most of the text there are innumerable allusions to personal observations of one of the authors, extending over a period of years. The book closes with a description of isolation procedures, including some of the plans and special types of buildings used in the London fever hospitals.