Many improvements have been incorporated in the third edition of this volume. There is an even greater number of the excellent illustrations than in previous editions, and the appearance of this volume has been generally streamlined. More data on the physiology of fungi have been added. Cross sensitization between penicillin and certain dermatophytes is discussed. A number of additional fungi have been included in the chapter on pathogenic fungi. The discussion of tinea of the scalp has been brought up to date on the basis of the authors' observations during the recent scalp ringworm epidemic.
In some parts of the book, such as in the chapter on otomycosis, the more recent advances in knowledge, acquired during the war, have not yet been included. Some of the debatable statements made and directions given in previous editions, including, for example, the "ritual" for prevention of tinea pedis, have been retained. However, this