LONG-ISLAND DIVISION. 
253 
pebbles in all stages of decomposition. The sands are mostly yellowish, with some very 
white and fine. The clays are principally white; some yellowish and bluish. The sand, 
gravel and pebble beds are mostly siliceous, and contain some mica. The pebble beds show 
granite, gneiss, mica slate and sandstone pebbles ; and some of the kind of sandstone so nearly 
resembling granite, of which boulders were described as occurring at three miles east of Flush¬ 
ing, at Whitestone, &c. Iron ore abounds here, and many tons could easily be collected on 
the shore. Specimens of the lignite, of the wood partly changed to rotten wood and to limo- 
nite, and others entirely changed to limonite, may be seen in the State Museum at Albany. 
One specimen of fossil wood, converted to limonite, may be seen there, that is about a foot 
in diameter in one direction, but the ligneous structure is not as distinct as in the smaller spe¬ 
cimens in the cases. A bed of brown clay, with a thickness of about fifteen feet exposed to 
view, was seen on the east side of Lloyd’s neck, about a mile south of Fort Hill. 
On East neck. Prof. Briggs observed two beds of clay on the north shore. The lower stratum 
is a blackish gravelly clay, overlaid by yellowish clay. They seem to be blended with each 
other near their line of junction. They were undulating, but the general direction of the dip 
seemed to be to the south and southwest. On the northeast part of East neck, a beautiful 
flesh-colored clay was observed, “ of a superior quality for bricks and coarse pottery.”* The 
thickness, extent and dip of this stratum could not easily be ascertained, in consequence of 
numerous slides having deranged the position of the strata. It is supposed, however, from 
the numerous offsets produced by these slides, and the settling down of the masses of the 
chff for some little distance inland, that the dip must be slightly to the north and northeast. 
The slides have not destroyed the timber growth, but some of the trees lean inland, as the 
bases of the slides slip farther onward than their tops. These clay beds belong to Capt. Ray¬ 
mond Sellick. 
On the east side of East neck, about a mile and a quarter from Centreport, a bed of white 
clay occurs, of superior quality for stone-ware. It is overlaid by variegated sands, tinged 
with various shades of brown, yellow, white and red. These sands are used for castings, and 
are shipped to New-York, Boston and other places, for that purpose. The direction of the 
dip of these strata could not be ascertained, in consequence of the sand having crumbled down 
and covered most of the strata since the storm laid them there. The cliffs are here ninety to 
one hundred feet high. 
The following section was obtained by Prof. Briggs : 
Prof. Briggs’ Notes on the Geological Survey of New-York. 
