The book is a collection of fifteen lectures given by the author at the Facultad de Medicina de Montevideo. The style is very readable and the contents are interesting. Much of the material represents conclusions drawn from work with experimental animals and might not be valid for human beings. While the conclusions present little of practical value to the clinician, they should stimulate interest among those doing research. The clinician will gain from this book an appreciation of the complicated mechanisms governing uterine physiology.