LONG-ISLAND DIVISION. 
259 
(c). Section of a well at Mr. Johnson’s in Brooklyn, between Wallahout and Guanas,* dug 
in April, 1811. 
1. Sandy loam,_ 3 
2. Hard concreted clay, sand and stones colored with iron, and requiring a pick to dig, 
composed of gneiss, hornblende and brittle slate,_ 15 
3. Loose gravel and greyish sand, with thin streaks of gravel; the gravel of quartz, ha- 
sanite, breccias, mica slate and red sandstone,_ 20 
4. Alternating layers of two or three feet of sand and gravel, containing coarse green 
soapstone (serpentine?) in addition to the materials of No. 3,- 17 
5. Sand and gravel in alternating layers; the gravel beds contain sea shells, mostly clams 
and oysters, but the sand contains none,_ 29 
84t 
Clay has been seen in the following places, in addition to those heretofore mentioned : 
1. Clay is found beneath the sand, between Riverhead and Canoe place, in many places. It is also 
found on Mecomick river, three miles below Riverhead; one hundred rods north of Riverhead; 
one mile southwest of Riverhead; and is common in the sand hills. 
2. Along the shore of Great Peconic bay, in several places; one mile east of Canoe place; on Sebonic 
neck; Cow neck, near Mr. White’s; two and a half miles northwest of Southampton, near 
West neck. 
3. Clay underlies the sand and gravel beds of Great and Little Hog necks in Southampton; and is 
found at the White hills on the west side of Shelter island. White clay on Mr. Tuttle’s farm, 
on Shelter island. 
4. Near Sag-Harbor, at the brick-kilns. The clay is much intermingled with pebbles and gravel, and 
is overlaid by sand. 
5. At Sand’s point, clay containing lignite is said to occur.| I have not seen them there. 
6. Near Oysterbay, are several localities of clay. I did not see them. Judging from the color of the 
srmds, the clays must be of the same characters as those of Lloyd’s and West necks. 
7. On Hog island, or Middle island, Oysterbay township, blue clay was seen on the north-northeast, 
south and southwest sides, and white clay on the east and west sides, twenty feet thick, but more 
than one half this depth below low-water mark. They are overlaid by sand and gravel beds, 
and by the drift. Ochreous earth on the east side. 
8. Clay was also seen near Dasoris, on Mr. Latting’s land. 
9. On Robin’s island, in large quantities. 
* This name is and has been variously spelled, but this is believed to be the proper mode. It has been spelled Gowannus, Co- 
mrams, Cowannus, &c. 
t Bruce’s Mineralogical Journal. 
t American Journal of Science, Vol. 7, p. 35. Finch, on the Tertiary of the United States. 
