28 TRANSACTIONS OF. THE [Nov. 14. 
AppITIONS TO THE PALHOBOTANY OF THE CRETACEOUS ForRMATION 
ON Sraren IsiAnp. 
By Arrsur Hottricr. 
In a previous communication * I gave an account of the fossil 
leaves found upon Staten Island which could be indisputably 
recognized as Cretaceous species, the object being to demon- 
strate the occurrence and probable extent of the Cretaceous 
formation in that locality.x—Quite a large amount of the 
material then in my possession I had not determined, as noted 
at the close of my formey contribution, and more has since come 
to light. All this material has recently been subjected to care- 
ful examination and comparison and the results obtained form 
the basis of this paper. 
The remains, consisting of leaves, stems, fruits and seeds, are 
found in place, imbedded in the Cretaceous clays, or else in 
ferruginous sandstone and concretions, evidently derived from 
the clays, but now distributed through’ the glacial drift which 
overlies them. Those which occur in the clays are in the condi- 
tion of lignite, which disintegrates upon exposure and soon 
renders them useless for accurate study or identification, 
Drawings of these were made as quickly as possible after collec- 
tion but many were destroyed before they could be depicted. 
Those which occur in the sandstones and concretions are mostly 
in the nature of impressions only—the lignite having entirely 
disappeared. Many of these impressions are very perfect and 
afford exceedingly satisfactory subjects for study. 
The additions number about forty species, a large part of 
them not before recorded from the eastern United States, 
although described by Prof. Oswald Heer, from Greenland and 
by Prof. Leo Lesquereux from the western United States. 
Nine represent new species in the genera Populus, Myrica, 
Platanus, Ficus, Kalmia, Acer, Magnolia, and Williamsonia, besides 
remains of uncertain aftinities, consisting of leaves, fruits, and 
seeds. 
In the study of this material 1 wish to acknowledge the 
assistance which I have obtained from Dr. J. S. Newberry’s 
' * Paleontology of the Cretaceous Formation on Staten Island. Trans. N. Y. 
Acad. Sci. XI, 96-103. 
