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their unbroken condition indicated a quiet deposition. The 

 shells on the other hand on the islands, in Boston Harbor, 

 are always broken. 



Prof. Rogers said, he thought it was possible to reconcile 

 the conflicting views as to the age of these formations. 

 When the discoveries were made at Brooklyn, it at once 

 occurred to him that they were in strict accordance with 

 his theory of diluvial action. It was natural to expect that 

 when the rush of waters from the north reached the margin 

 of the sea, the drift falling into it would mix with the shells 

 earthy materials, crushing some and sparing others, leaving 

 here and there patches of clay and mud with their con- 

 tained fossils, undisturbed and uninjured, — such a state of 

 things as in fact exists. As to the question whether these 

 deposits are to be considered tertiary or quaternary, accord- 

 ing as they contain recent shells or not, there was no evi- 

 dence which could prove that species supposed to be extinct 

 might not exist elsewhere at the present time. 



Dr. C. T. Jackson read a letter from Mr. W. J. Starr, of 

 St. Johns, N. B., presenting a box of fossils from the Jog- 

 gins Coal-mines. 



Dr. Gould read a letter from Mr. Joseph Monds, of Nor- 

 wich, Conn., presenting specimens of the animals of Naiica 

 duplicata and Pyrula canaliculata, from Saybrook, Conn. ; 

 also several specimens of Donax and animal, Anatifa and 

 Cineras from the Greek Archipelago. 



The thanks of the Society were voted to Messrs. Starr 

 and Monds for their donations. 



