SCIENCE-ADVERTISEMENTS 



Important Books in Science 



The Mechanistic Conception of Life. Biological Essays by Jacqles Loeb, Head of the Depart- 

 ment of Experimental Biology, Rockefeller Institute for Medical Research. 238 pages, 



12mo, cloth ; postpaid, $1.65. 



In this his latest work Professor Loeb presents many of the current problems in biology, and dis- 

 cusses the question whether the phenomena of life can be explained by physical and chemical laws. He 

 finds it possible to control by physical and chemical means not merely the processes of reproduction, but 

 also the conduct of animals with reference to en^dronment. 



Johns Hopkins Hospital Bulletin. All eager to know more of the origin of life will find no modern 

 book of its size nearly so instructive or inspiring. 

 Heredity and Eugenics. By John M. Coulteh, Willi.\m E. Castle, Edward M. East, William 



L. TowEB, and Charles B. Davenport. 312 pages, 8vo, cloth ; postpaid, $2.70. 



Leading investigators have in this work made clear the present position of evolution, experimental 

 results in heredity in connection with both plants and animals, the enormous value of the practical ap- 

 ■ plication of these laws in breeding, and human eugenics. The volume is profusely illustrated. 



British Medical Journal. Those who are desirous of arriving at an estimate of the present state of 

 knowledge in all that concerns the science of genetics, the nature of the experimental work now being 

 done in its various departments, .... and the prospects, immediate or remote, of important practical 

 applications, cannot do better than study Heredity and Eugenics. 

 American Permian Vertehrates. By Samlel Wendell Williston, Professor of Paleontology in 



the University of Chicago. 152 pages, 39 plates, 8vo, cloth ; postpaid, $2.68. ^ 



This work comprises a series of monographic studies, with briefer notes and descriptions, of new 

 or little-known amphibians and reptiles from the Permian deposits of Texas and New Mexico. The work 

 is illustrated by the author. 



Athenaeum. The paleontologist will welcome the work as a solid contribution to our knowledge 

 of a fauna which is of exceptional interest to the student of evolution, inasmuch as it includes forms 

 that help to bridge over some of the differences between reptiles and amphibians. 

 Morphology of Gymnosperms. By John M. Coulter, Professor of Botany, and Charles J. 



Chamberlain, Associate Professor of Botany, in the University of Chicago. 470 pages, 



462 illustrations, 8vo, cloth; postpaid, S4.22. 



Each of the seven great groups of gymnosperms is here presented in detail, and a final chapter 

 discusses the problem of phylogeny and points out the evolutionary tendencies. The extinct groups 

 are now included for the first time ; and vascular anatomy is recognized as a morphological subject of 

 first importance. The illustrations are numerous and in large part original. 



Nature. The book is an invaluable record, admirably illustrated, of our present^knowledge of 

 the older type of seed-plants. 



Outlines of Geologic History with Especial Reference to North America. Symposium organ- 

 ized by Bailey Willis, of the United States Geological Survey ; compilation edited by 

 RoLLiN D. Salisbury, Professor of Geographic Geology in the University of Chicago. 316 

 pages, 8vo, cloth ; postpaid, $1.66. 



These essays and discussions embody the present state of knowledge and opinion concerning many 

 of the fundamental problems of North American geology. The value of the book is greatly enhanced by 

 the fifteen paleogeographic maps by Bailey Willis. 



Scottish Geographical Magazine. The value of such a collection is very great, as each wTiter dis- 

 cusses only the formation or subject which has formed his own special study. 



STANDARD TSXTBOOKS 



Methods in Plant Histology. With Illustrations. By Charles Joseph Chamberlain, Associate 

 Professor of Botany in the University of Chicago. 272 pages, 8vo, cloth; postpaid, $2.39. 



Animal Micrology. By Michael F. Guyer, Professor of Zoology in the University of Cincinnati. 

 250 pages, 8vo, cloth; postpaid, $1.88. 



A Laboratory Guide in Bacteriology. By Pail G. Heinemann, Instructer in Bacteriology in 

 the University of Chicago. 216 pages, 12mo, cloth; postpaid, $1.59. 



Neurological Technique. By Irving Hardesty, Professor of Anatomy in Tulane University. 

 196 pages, 8vo, cloth ; postpaid, $1.59. 



Laboratory Outlines for the Study of the Embryology of the Chick and the Pig. By Frank 

 R. LiLLiB, Professor of Embryology in the University of Chicago. 4S pages, paper; post- 

 paid, 27 cents. 



THE UINIVERS8TV OF CHICAGO RRESS 

 Chicag^o, Illinois 



AGENTS 



The Baker & Taylor Company, New York The Cambridge University Press, London and Edinburgh 



Th. Stauffer, Leipzig The Maruzen-Kabushiki-Kaisha, Tokyo, Osaka, and Kyoto 



