It is hoped that the author will write a second or even a third volume on this subject, since the present volume, complete as far as it goes, covers but a small part of the field of experimental physiology. All important methods pertaining to the study of the blood, respiration and circulation are considered from an experimental point of view. As a book detailing methods in these fields it is complete and should be useful to the investigator planning research in these subjects. A comprehensive bibliography is appended to the several chapters. Some of the experiments are too involved and intricate to lend themselves readily to mass repetition by a class in physiology but are suitable as demonstrations.