Considerably expanded and improved from the paper-bound first edition issued by the Children's Bureau in 1948 under the same title (Publication #325), the major strength of this edition again lies in its excellent bibliography. From this has been extracted a tremendous amount of useful information, well organized, and easily accessible through an excellent index. Though the volume is certainly not in any sense a textbook, it reflects a large experience and acquaintance of the author and her staff not only with the literature pertaining to premature infants, but with care programs and personnel responsible for the remarkable strides that have been made in this field during recent times.