This book will be of interest and value to those persons interested in our current and future population problems and trends. The five sections of the book represent the five sessions of the meeting: two on current problems and technics, one on food resources and two on fertility. The first section, Application of Demographic Data to Current Problems, contains papers on the relative importance of mortality and divorce in the United States, on the length of the working life and on a series of illegal abortions. One speaker pointed out that, in view of the rapid rise of the divorce rate during recent years, it is significant that the trend in total marital dissolutions has shown a less alarming picture; the rise in divorces is being offset by the continued decline in marriages dissolved by death. Typhoid fever, tuberculosis and the hazards of childbirth, "the great homebreakers of the past,"