AMERICAN MUSEUM OF NATURAL HISTORY 
The Evolution of the 
a = t7} : 
(¢ Ed by 
+4) 
W. D. Matthew, Ph.D. 
Associate Curator of Vertebrate Palzontology 
SUPPLEMENT TO AMERICAN MUSEUM JOURNAL 
VOL. Ill, No. 1, JANUARY, 1903 
Guide Leaflet No. 9 
ee” 
: Second Edition, May, 1905 
