DESCRIPTIONS 
OF THE 
INFERIOR MAXILLARY BONES 
OF 
MASTODONS, 
IN THE 
CABINET OF THE AMERICAN PHILOSOPHICAL SOCIETY, 
WITH 
REMARKS ON THE GENUS TETRACAULODON, &c. 
BY ISAAC HAYS, M.D. 
EXTRACTED FROM THE TRANSACTIONS OF THE AMERICAN PHILOSOPHICAL SOCIETY, VOL. IV. N. S. 
PRINTED BY 
JAMES KAY, JUN. AND CO., PHILADELPHIA, 
Printers to the American Philosophical Society. 
1833 . 
