[Annals N. Y. Acad. Sci., XI, No. 20, pp. 415 to 430, October 13, 1898.] 



ADDITIONS TO THE PALEOBOTANY OF THE CRE- 

 TACEOUS FORMATION ON STATEN 

 ISLAND. NO. II. 



Arthur Rollick. 



(Read May 16, 1898.) 



[Plates XXXVI-XXXVIII.] 



In two papers upon this subject previously published our 

 knowledge of the Cretaceous flora of Staten Island was brought 

 up to the year 1892.^ Since that time considerable additional 

 material has been collected, including several species not before 

 recorded from the island, which have been the subject of notes 

 and memoranda read before the Natural Science Association of 

 Staten Island and published from time to time in its Proceedings. 



The object of the present paper is to describe this material as 

 a whole and also to indicate certain modifications of views pre- 

 viously expressed, due to information acquired since the other 

 contributions to the subject were issued. 



All the specimens were found in hardened ferruginous clay 

 concretions or shaly fragments, in connection with the terminal 

 moraine. None of the specimens was found in place, although 

 they must have been derived from Cretaceous strata in the im- 

 mediate vicinity, either on the island or on the adjacent main- 

 land. Some of those from Tottenville and Prince's Bay may 

 have been from the latter source, but the Arrochar specimens 

 were undoubtedly native to the island, although disturbed from 

 their original position. 



It was previously taken for granted that all the cretaceous 



^ The Palaeontology of the Cretaceous Formation on Staten Island. Trans. N. 

 V. Acad. Sci., XI (1892), 96-104; PI. I-IV. 



Additions to the Paleeobotany of the Cretaceous Formation on Staten Island. 

 Ibid., XII (1892), 28-39; PI. I-IV. 



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