As the title suggests, this is a survey of the animal kingdom. The scope of the book, within the page limitations, makes the authors deal to some degree in generalities. They have attempted quite successfully to summarize both the factual and theoretical knowledge constituting up-to-date zoological sciences. Chapters such as "Cell Metabolism" and "Chemical and Mathematical Aspects of Genetics" presuppose a knowledge of chemistry and mathematics not likely to be deeply entrenched in the minds of most beginning students of zoology and possibly questionable as part of the intellectual armamentarium of even more advanced ones. The book, however, serves as a teaching text from which the instructor can extract those topics which he wishes to emphasize. Ample reading material is available for the interested student who wishes to extend himself beyond classroom requirements. The text is well illustrated with photographs and line drawings.