This book sets forth the author's ideas of how to avoid the common cold. Some of the advice with respect to sleep, diet, exercise and the avoidance of infection is excellent, but it is mixed with unscientific material such as the advice to use raw milk, the insistence on a special posture during sleep, overemphasis on exercise, cold bathing and posture and, above all, the unqualified promise with respect to the common cold that its prevention "is easy and the knowledge of means ready at hand." The text is repetitious and not well organized. In mentioning the infectious agents involved in the common cold, the filtrable virus is omitted. The dietary advice is sketchy and inadequate.