"The present work," the author says, "represents three years of research in the Laboratory of Preventive Medicine and Hygiene of the Harvard Medical School." It is in no sense a clinical study and contains no direct clinical observations. Concerning the scope of the monograph Allen says, "It aims primarily to present the results of research."
The volume is large, and the greater part is devoted to an elaborate presentation of the literature. This review represents a stupendous and commendable work agreeably done and possessing a genuine value for the investigator who desires to grasp what has been accomplished in an unfamiliar department of diabetic investigation. As arranged by Allen and interlarded with his original comment and speculation, it forms suggestive and entertaining literature, revealing many facts which have not received the emphasis due them, and, indeed, sending the imagination on many a rapid flight. This constitutes the most commendable feature