L 





BULLETIN 



OF THE 



American Museum of Natural 



History. 



Vol. XXVIL 1910. 



EDITOR, J. A. ALLEN. 



THE ORDERS OF MAMMALS. 



BY 

 WILLL\M K. GREGORY, 



New York: 



Published by order of the Trustees 



February, 1910. 



FOR SALE AT THE MUSEUM 





M a «87 





4a^4M.*k»*^ 



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