This text, which first appeared in 1927, presents the fundamentals of embryology in a clear and concise manner. The subject matter is treated on a comparative basis, with the amphioxus, the frog, the chicken, and man serving as the prototypes. There is a short section devoted to embryologic techniques and an extensive glossary of technical terms employed in embryology. The numerous illustrations are clearly drawn and labeled. The material presented in this book should adequately orient the medical student in the field of embryology without overwhelming him with details of interest and importance largely to specialists in the field.