Mineralogy of Jefferson and St. Lawrence Counties, N.Y. 347 
It occurs in a large vein in the metalliferous lime rock, extended 
directly back from the shore of the Lake, which has been exposed at 
various points, fer about thirty rods. ‘The mineral may be taken out 
in blocks, two to three feet in length, and a foot or more in width, 
It is compactly fibrous, and banded, but never crystallized. The 
colors vary from pearl-white to flesh-red, and are arranged most com-: 
monly in stripes or rings. It takesa high polish; the polished speci- 
mens in thin slabs are translucent, and in some specimens semi-trans- 
parent. This mineral might be advantageously used for ornamental 
purposes. It may be obtained at the locality in any desirable quanti- 
ty ; it may be sawed and polished with great ease, and the si ae 
specimens are very beautiful. 
Some years ago, a cave of considerable extent was discovered near 
the village of Watertown. This cave furnished stalactites in great 
abundance, but all the interesting specimens have long since been 
carried away by mineralogists and other persons who have visited it. 
Very fine specimens of Agaric ye in large masses, may yet 
be obtained at this locality. 
From Watertown proceeding in a North easterly direction eight 
or ten miles, we see the lime rock cropping out, and we come upon 
the Calciferous Sand Rock which passes under the Lime Rock and. 
extends north and East-until it meets with the primitive formation. 
The Calciferous Sand Rock, so far as we know, does not furnish any 
interesting minerals. 
At Theresa on the Indian river, eighteen miles from Watertown 
we found Crystallized Milk Quartz. It occurs in a large vein in 
‘Gneiss. Itis perfectly white, and contains crystals more or less perfect 
running through it in all directions. ‘The Crystals which are six sided 
prisms, entirely opaque, varying from two to sev en machen) in lengi 
and from one half to two inches in diameter, 
by six sided pyramids at one or both extremities. Good specimens 
may still be obtained by blasting the rock. At Theresa we also find 
Steatite in considerable quantities, imbedded in granular lime rock. 
Brucite? is found in grains disseminated through the same rock. 
In the town of Antwerp, Jefferson Co., twenty four miles from 
Watertown, we found, by the road side, a large boulder of granular 
lime rock, which contains tremolite in fine crystals; also crystals of 
white augite. 
t Oxbow, on the Oswegatchie river, we find green crystals of 
Hornblende, variety Pargasite. The same mineral is found more 
