This book is well known to those familiar with the earlier editions. As the title suggests, it is an introduction and not a treatise. However, for the average problem encountered in general practice, the illustrations and descriptions are sufficiently complete. In fact, some of the colored plates are practically diagnostic lessons in themselves. Missing from the entries are references to some treatments commonly used in the United States, but the descriptive presentations will more than offset this for the average practitioner. The book is well prepared, the writing easy to read, and the format pleasing to the eye.