128 NEW YORK STATE MUSEUM 



Concretions are abundant in the clay on Center Island and 

 West Neck. Those found at the latter locality are disc- shaped, 

 while those found on Center Island are more or less botryoidal. 



Silicified yellow gravel fossils have been found by the writer 

 in the sands on West Neck,* and more were subsequently found 

 in other localities by Mr. Hollick. f 



On Little Neck, in Northport Bay, is an extensive deposit of 

 stoneware clay and fire sand, which has been worked for a 

 number of years. The clay is stratified, the layers being 

 separated by laminse of sand. In color the material varies from 

 black to brown and yellow, and it becomes sandy in its upper 

 portion. There is a dip of 15° S. E. due to a slipping of the clay 

 bank. Overlying the clay is cross-bedded fine sand and gravel, 

 the latter containing much coarse material near the surface. 

 Yery little till covers the whole. Much fine, white fire sand 

 occurs in portions of the bank. A careful examination of the 

 section showed a brownish-black seam of the clay, two feet 

 thick, containing numerous fragments of plant remains, of which 

 a number were sufficiently well preserved to determine the 

 Cretaceous age of the clay beyond doubt. The species were 

 identified for me by Mr. Hollick as follows : 



Protaeoides daphnogenoides, Heer. 



Palinrus integrifolia, Hollick. 



Laurus angusta, Heer. 



Myrsine sp. 



Williamsonia sp. 



Celastrophyllum sp. 



Paliurus sp. 



The latter resembles Paliurus Columbi (Heer) ; a Tertiary 

 species (Fl. Foss, Arct. I, 122, pi. XY11, Fig. 2d,) but is much 

 smaller and very probably a new species. The above species are 

 the same as those found in the middle cretaceous clays of Staten 

 Island, N. Y., and Perth Amboy, N. J. 



Three species of diatoms, all fresh water forms, were also 

 discovered in this clay. 



Melosira granulata, (Ehr.) Ralfs. 



Diatoma hyemale, K. B. 



Cocconema parvum, W. Smith. 



♦Trans N. Y. Acad. Scl., XII. 



t Trans. N. Y. Acad Sci. Vol. XIII. 



