ALLUVIAL DIVISION. 
237 
examined by Mr. T. Seymour.* The owner, Mr. Montgomery, informed him that the ore 
was about one and a half feet below the surface, over about one acre of ground, and four 
feet thick. 
Chalybeate Springs. 
A chalybeate spring (supposed to be), called the Yellow spring, is said to exist on Judge 
Osborn’s farm, one mile south of his house, on Farrington’s neck, Southampton, Long 
island. The water sinks in the sand a short distance from the spring. 
Water colored by iron, was seen by the mill two and a half or three miles from Sag-Har¬ 
bor, and a mile from the south end of Farrington’s neck. This fact has been observed gene¬ 
rally at all the mill-dams of Long island, and other parts of eastern New-York, where sand 
and gravel have been used to make the dams. The water oozing slowly through those mate¬ 
rials, has carbonic acid enough in solution to dissolve some of the oxide of iron in the sand 
and gravel; and this is deposited again in the still stagnant and evaporating water in the pools 
below the dams, during the droughts of summer. These appearances are sometimes also 
due to infusoria. 
At Horton’s point, Southold, Long island, is a small chalybeate spring, perhaps too small to 
be of importance. 
Another, more copious, was seen one mile east of Hudson’s point, in Riverhead township. 
Long island. 
Several were seen on the north side of Shawango neck, west of Montauk point, Easthamp- 
ton. Long island. Some flow from the low cliffs along the shore; others around the pond- 
holes and hollows in the hilly region. 
Another was seen in Livingston, Columbia county, a few rods west of the road, between 
the Blue store and Johnstown, in a small ravine in the quaternary formation. There was an 
abundant flow of water. 
Another was examined near the mill in the yard of Mr.-, in North-Salem, West¬ 
chester county, two miles east of the Academy. This spring fills a half inch tube with a 
steady flow of water. It was examined by Prof. Cassels. It is near the celebrated block of 
granite, supported on small colums of primary granular limestone. (Vide PI. 37, fig. 4.) t 
A great number of springs of fresh water flow from the base of the hills at the head of 
Little Cow harbor, in Suffolk county. Two springs at this place are slightly chalybeate.J 
Among the numerous springs that supply the mill near Elderkin’s, in Setauket, are one or 
two chalybeate springs 
Mr. Seymour was one of the junior assistants on the Geological Survey. He has collected many interesting facts, and 
copied many of the drawings and sections for this volume. He is now a cadet in the United States Military Academy, and fitting 
himself for his country’s service. 
t American Journal of Science, Vol. 2, p. 200. 
% Briggs. Notes on Geological Survey of New-York. 
