' ^ t,-*^ 



"T^- 



BULLETIN 



OF THE 



American Museum of Natural 



History. 



Vol. XXVIL 1910. 



EDITOR, J. A. ALLEN. 



THE ORDERS OF MAMMALS. 



■BY 



WILLIAM K. GREGORY. 



New York: 



Published by order of the Trustees. 



February, 1910. 



FOR SALE AT THE MUSEUM. 



J 



