The details which are desirable for a person with diabetes to learn cause physicians either to follow the principles and manual of one of the leaders in this field or to reduce their own views to mimeographed or printed form. Here are 131 blank pages on which the patient can make notes, alternating with 131 pages of text. Four-fifths of this text deals with food; only onefifth with medical aspects. These are stated soundly. As between this and previous guides by other reputable men, the choice is largely a choice of the man one wishes to follow.