1895.] NATURAE SCIENCES OF PHILADELPHIA. 451 



The Port Kennedy Deposit. Prof. Angelo Heilprin, com- 

 menting upon the evidence that had been submitted regarding the 

 age of the deposit, believed that special caution was necessary in as- 

 signing to the debris a definite geological position. To him the 

 large number of extinct or Neotropical forms indicated more nearly 

 a Pliocene rather than Post-Pliocene fauna — at all events a fauna 

 whose culmination preceded the Glacial Epoch — and he was hardly 

 prepared to accept them as a part of the fauna of the region which 

 survived the melting of the ice. The correspondence was with 

 the Pampeau fauna of the southern continent, and this he was also 

 inclined to believe to be ( as Prof. Cope himself had years before an- 

 nounced) Pliocene. Prof. Heilprin said that he was not yet a con- 

 vert to the Columbian gravel theory, regarding which far too much 

 uncertainty existed to permit it to be accepted as a broad chrono- 

 logical element in geological history. He thought it not unlikely 

 that the remains in question had been subjected to redistribution 

 by the glacial flood of the Delaware River Valley, the high back- 

 water of which must have penetrated far into the valley of the 

 Schuylkill, and into the very region of. Port Kennedy. 



The Recording Secretary read the following: — 



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