The decennial publications of the University of Chicago are issued in commemoration of the completion of the first ten years of the university's existence, and the two volumes before us contain Professor Loeb's articles on various topics in general physiology. Many of the papers here collected—indeed, the majority—originally appeared in German. These have been translated. Probably to the regret of many, joint papers by Professor Loeb and others have been omitted. As it is, we have here within easy reach and in convenient form the choice products of this original investigator, in a new field, up to the time that he left the University of Chicago (1903). All progressive medical men, especially teachers, who have not made themselves familiar with Loeb's investigations as the results have been published from time to time, will be gratified to learn that his scattered publications are now easily accessible. This is not the place