The author outlines with descriptive tables and illustrations the duties and obligations of the control officer in the field of environmental sanitation. The text includes introduction of the health officer, public health engineer and food sanitarian to the problems of milk and food control. Need for effective educational programs is properly emphasized. Basic research in the essentials of restaurant and soda fountain sanitation are under way in many places at present. The author has done a timely job in bringing together factual data which can be supplemented as reports of current research become more widely available. The book is commended to every health officer and student of sanitation.