180 [June, 



Charleston, S. C, mpntioiiiiig the discovery of a large quantity of 

 Mammalian remains on the banks of Ashley river in that State, com- 

 prising numerous extinct genera. 



June \1th. 

 Dr. Bridges in the Chair. 



Dr. Keller exhibited a calculus of considerable size, taken from the 

 bladder of a whale. He stated that calculi were frequently found in 

 this animal, and occasionally in large numbers. Dr. Keller promised 

 a full analysis of the present and other specimens of calculi in his pos- 

 session, to be laid before the Society at a future meeting. 



A communication was read from the Secretary of the American 

 Philosophical Society, acknowledging the receipt of the last number 

 of the Proceedings of the Academy. 



June 2Qih. 



Vice President Morton in the Chair. 



The Committee to whom was referred Dr. Leidy's remarks on the 

 fragments of the fossil Tapir, deposited in the collection of the 

 Academy by the late Dr. Carpenter, of New Orleans, rejiorted in 

 favor of publication in the Proceedings. 



Tayirus Americatms fossilis. 

 liv Joseph Leidy, M. D. 



There are three of these fragments ; one of them, being the crown of the fourth, 

 left, permanent premolar of the inferior maxilla, was found near Opelousas, 

 Louisiana, and was described by Dr. Carpenter, in Siiliman's Journal,* so early 

 as the year 1842. It does not differ from the same tooth in the recent Tapirus 

 Americanus. The other two fragments, consisting of the left half of an inferior 

 maxillary, and the posterior portion of the left superior maxilla, were found on 

 the banks of the Brasos river, near San Fillipe, Texas, and were described by 

 Dr. C, in Siiliman's Journal, f in the year 1846. 



The two fragments did not belong to the same individual, as Dr. C supposed, 

 from their having been " found within a few feet of each other." The superior 

 fragment belonged to an older individual than the inferior one, as is indicated by 

 the condition of the teeth. They also differ in the character of their fossilization, 

 which would make one think they could hardly have been found so near together. 

 The superior fragment has a white chalky aspect, is soft, rather friable, and is 

 readily cut with a pen-knife; whilst the inferior fragment is hard, compact, with 

 a brown polished surface, and does not so readily yield to the edge of the knife. 



• Am. Jour, of Sci. and Arts. New scries, V^ol. 1. No. 2, p. 217. 

 fVoI. xlii., p. 3J0. 



