CHAPTERS 



NATURAL HISTORY 



UNITED STATES 



R. W. SHUFELDT, M.D. 



CAPTAIN, MEDICAL DEPARTMENT, U. 8. AUMY (RETIRED). 



ASSOCIATE IN ZOOLOGY, SMITHSONIAN 



INSTITUTION. 



Author of " The Osteology of Arc-tie and Subarctic Water Birds," " The Myology 



of the Raven," " Lectures on Biology," " The Anatomy 



of Heloderma," Etc., Etc. 



STUDEE BROTHERS, Publishers, 



156 Fifth Avenue, New York. 



Issued under the auspices of 



THE NATURAL SCIENCE ASSOCIATION OF AMERICA, 

 NEW YORK, U. S. A. 



1897 



