During World War II rapid advances in the field of public health have been made so that a book on "modern trends" is certain to be of great value to those who wish to be brought up to date. The subjects selected vary from the social aspects of home and family life, nutrition, housing, child health, rheumatism, tuberculosis, occupational health; the relationship of public health to laboratory and academic medicine, to dentistry and to mental health; pollution of the atmosphere; vital statistics and also the various aspects of health education.