The increasing attention which of late years has been given to the study of comparative anatomy has finally resulted in what promises to be a complete and detailed account of the structure of a subhuman mammal.[66] The author, Dr. _Jayne_, believes that a course in mammalian anatomy offers a valuable preliminary to the study of medicine, and this is the purpose for which the book has been made. This is to a certain extent true, especially where, as in the case of the cat, there is so close a similarity to the structure of the human body. But the chief scientific interest and value of such a work must lie in its broader philosophic aspects; in the aid which it can not but give in clearing up some of the many mooted points of evolutional biology, and in the stimulus which it will impart to the study of relationships among the lower animals. The present volume, the first of the series, deals only with the skeleton of the cat, each bone being first studied individually, then in its relations to other bones and to the muscular system and the skeleton as a whole, and finally in comparison with the corresponding portion of the human skeleton. There are 611 extremely good illustrations, and the printing of the volume is unusually clean and attractive. Among the articles of special value in recent numbers of the (bimonthly) _Bulletin of the Department of Labor_, under the editorial control of Commissioner _Carroll D. Wright_ and Chief Clerk _O. D. Weaver_, are those on Boarding Houses and Clubs for Working Women, by Mary S. Ferguson, in the March number; The Alaskan Gold Fields and the Opportunities they afford for Capital and Labor, by S. C. Durham, in the May number; Economic Aspects of the Liquor Problem; Brotherhood Relief and Insurance of Railway Employees, by E. R. Johnson, Ph. D.; and The Nations of Antwerp, by J. H. Gore, Ph. D., in the July number. Summaries of reports of labor statistics, of legislation and decisions of courts affecting labor, and of recent Government contracts constitute regular departments of the bulletin. (Washington.)