“Dr. Newman’s discussions of bacteria and disease, of immunity, of antitoxins, and of methods of disinfection, are illuminating, and are to be commended to all seeking information on these points. Any discussion of bacteria will seem technical to the uninitiated, but all such will find in this book popular treatment and scientific accuracy happily combined.”—_The Dial._ =7.—A Book of Whales.= By F. E. BEDDARD, M.A., F.R.S. Illustrated. 8°, $2.00. “Mr. Beddard has done well to devote a whole volume to whales. They are worthy of the biographer who has now well grouped and described these creatures. The general reader will not find the volume too technical, nor has the author failed in his attempt to produce a book that shall be acceptable to the zoölogist and the naturalist.”—_N. Y. Times._ =8.—Comparative Physiology of the Brain and Comparative Psychology.= With special reference to the Invertebrates. By JACQUES LOEB, M.D., Professor of Physiology in the University of Chicago. Illustrated. 8°, $1.75. “No student of this most interesting phase of the problems of life can afford to remain in ignorance of the wide range of facts and the suggestive series of interpretations which Professor Loeb has brought together in this volume.”—JOSEPH JASTROW, in the _Chicago Dial_. =9.—The Stars.= By Professor SIMON NEWCOMB, U.S.N., Nautical Almanac Office, and Johns Hopkins University. 8°. Illustrated. Net, $2.00. (By mail, $2.20.) =10.—The Basis of Social Relations.= A Study in Ethnic Psychology. By DANIEL G. BRINTON, A.M., M.D., LL.D., Sc.D., Late Professor of American Archæology and Linguistics in the University of Pennsylvania; Author of “History of Primitive Religions,” “Races and Peoples,” “The American Race,” etc. Edited by LIVINGSTON FARRAND, Columbia University. 8°. (By mail, $ .) Net, $ . * * * * * _The following volumes are in preparation:_ =Meteors and Comets.= By Professor C. A. YOUNG, Princeton University. =The Measurement of the Earth.= By Professor C. T. MENDENHALL, Worcester Polytechnic Institute, formerly Superintendent of the U. S. Coast and Geodetic Survey. =Earthquakes.= By Major C. E. DUTTON, U.S.A. =The History of Science.= By C. S. PEIRCE. =Recent Theories of Evolution.= By J. MARK BALDWIN, Princeton University. =The Reproduction of Living Beings.= By Professor MARCUS HARTOG, Queen’s College, Cork. =Man and the Higher Apes.= By Dr. A. KEITH, F.R.C.S. =Heredity.= By J. ARTHUR THOMPSON, School of Medicine, Edinburgh. =Life Areas of North America: A Study in the Distribution of Animals and Plants.= By Dr. C. HART MERRIAM, Chief of the Biological Survey, U. S. Department of Agriculture. =Age, Growth, Sex, and Death.= By Professor CHARLES S. MINOT, Harvard Medical School. =History of Botany.= By Professor A. H. GREEN. =Planetary Motion.= By G. W. HILL.