The Twentieth Century Text Books of Biology. 



PLANT RELATIONS, 12nio, cloth $1.10 



PLANT STRUCTURES, 12nio, cloth 1.20 



PLANT STUDIES, l2mo, cloth 1.20 



PLANTS, l2mo, cloth 1.80 



ANALYTICAL KEY TO PLANTS, l2mo, flexible cloth . . .75 

 All by JOHN MERLE COULTER. A. M., Ph. 0.. Head of Dept. of Botany, University of Chicago. 



2'hey are already the preferred texts^ and the 

 reasons will be apparent on examination. 



ANIMAL LIFE: A First Book of Zoology. 



iBy DAVID S. JORDAN. M. S., M. D , Ph. D., LL. D,, President of the Leland Stanford Jun- 

 ior University, and VERNON L. KELLOGG, M. S., Professor in Leland Stanford Junior 

 University. 12mo. Cloth, $1.20. Afozv ready. 



Not a book for learning the classification, anatomy, and nomenclature af animals, but to 

 shoiv how animals reached their present developtne^it, the effects of enznronment, their place 

 ■in Nature, their relations to one another and to the human race. Designed for one-/talf 

 year's ivork in high schools. Send f 07- sample pages. 



ANIMAL FORMS: A Second Book of Zoology. 



By DAVID S. JORDAN, M. S., M. D . Ph D , LL. D., and HAROLD HEATH, Ph D., 

 Professor in Leland Stanford Junior University. Ready in February, jgoi . 



D. APPLETON AND COMPANY, Publishers, l^ew York, Chicago, London. 



Recent Scientific Works 



TN Astronomy, Dr. Simon Newcomb's new book, pub- 

 "*■ lished October, 1900; in Physics, tbe Johns Hoplvins 

 text of Professors Rowland and Ames ; also in Physics 

 for second and third year high school work, the text 

 of Dr. Hoadley, of Swarthmore; in Physiology, the text 

 by Drs. Macy and Norris, based on the Nervous System ; 

 also the High School Physiology indorsed by the W. C. 

 T. U., written by Dr. Hewes, of Harvard University; in 

 Geology, the Revised "Compend" of Dr. Le Conte, and 

 the two standard works of Dana,— The Manual for Uni- 

 versity Work, and the New Text Book, revision and 

 rewriting of Dr. Rice, for fourth year high school work; 

 in Chemistry, the approved Storer and Lindsay, recom- 

 mended for secondary schools by the leading colleges ; 

 in Zoology, the Laboratory Manual of Dr. Needham, of 

 Cornell; and the Series •• Scientific Memoirs" edited by 

 Dr. Ames, of Johns Hopkins. Nine volumes ready. 

 The publishers cordially invite correspondence. 



AMERICAN BOOK COMPANY, Cincinnati 



