APPLETONS' SCIENCE TEXT-BOOKS. 



The following works of this new series will be im- 

 mediately issued ; others are to follow : 



The Elements of Chemistry. 



BY PROF. F. W. CLARKE, 



Chemist of the United States Geological Survey. 



The Essentials of 

 Anatomy, Physiology, and Hygiene. 



BY ROGER S. TRACY, M. D., 



Author of " Handbook of Sanitary Information for Householders," 

 Sanitary Inspector of the New York City Health Department, 



A Compend of Geology. 



BY JOSEPH LE CONTE, 



Professor of Geology and Natural History in the University of 

 California ; author of " Elements of Geology," etc. 



Elements of Zoology. 



BY C. F. HOLDER, 



Fellow of the New York Academy of Sciences, Corresponding 

 Member of the Linnsean Society, etc. ; 



AND J. B. HOLDER, M. D., 



Curator of Zoology of American Museum of Natural History, 

 Central Park, New York. 



Descriptive Botany. 



BY ELIZA A. YOUMANS. 



