No. 275.] 
107 
Another locality is on Jedediah Wood's farm, 6 miles SSE of Put- 
nam Court-House, where it has long been supposed there was a lead 
mine. Pyrites are abundant in the gneiss rock near the eastern brow of 
the hill, and copperas effloresces on the face of the rock. Excavations 
have been made in two places where the pyrites abound, and the stra- 
tum was traced about 200 yards along the face of the hill. Some cu- 
rious experiments have been made here with the magic glass and poUsh- 
ed stones placed in the crown of a hat, in the way of mine hunting, by 
persons who seem to have been perfect dupes to their own believed 
power of discovering mines by this method: but they have found the 
people less credulous than themselves, and have not succeeded in disco- 
vering the pretended mines. 
Another locality is a quarter of a mile east of Luddington's store, 
about six miles north of Putnam Court-House. The pyrites is in a 
gangue of hornblende. Copperas effloresces, and causes the rock to 
crumble to sand. It is in a small digging on the west side of the mill 
pond. Lead ore is said to have been found in the hill north, but no 
traces of it were discovered. 
Many localities of pyrites were observed, which will be mentioned 
in the final report, under the head of mineral localities. 
Iron Ore. 
Limonite, 
Limonite in small quantities, under the forms of compact brown oxide 
of iron, hematite and bog ore, occurs in many places in Putnam and 
Westchester counties. The loose masses scattered over the surface of 
the earth, seem to indicate important beds in Putnam county. If sur- 
face indications are worthy of notice, a bed of hematite and brown iron 
ore will probably be found in the hills near the county poor-house, in 
Putnam county. 
A bed of limonite, containing some oxide of manganese, occurs very 
near the line between Philipstown and Carmel, in Peekskill hollow, 
about ten miles northeast of Peekskill. Its thickness is not known. 
Fifty to one hundred tons of the ore may be seen in heaps on the 
ground. The ore was dug many years ago, but it seems to be too sili- 
cious to work well alone in the furnace. By proper mixture with other 
ores, it might be wrought with advantage. Isaac Lockwood owns a 
part of the land underlaid by this ore. The right of digging the mine 
is vested in Nathaniel Bradley, of Conn, who purchased a large amount 
of mineral property in the Highlands some years ago. 
