250 Locahties of Minerals. 
5. By Dr. W. Lanestarr. 
1. Quartz, and a green substance which appears to be 
augite or coccolite—found in gneiss near Cold-Spring 
landing. : 
2. Coccolite, in foliated limestone ; same locality with 
the zircon. . 
3. Do. in quartz—same locality. 
- ( Do. in mass—same locality with the zircon. ~ 
4 J Augite, abundant in the the gneiss rocks at Cold- 
‘ Spring Landing. ' 
| Do. containing sphene. Cold-Spring Landing, N. J. 
5. Scapolite, containing Plumbago. Hamburgh. 
6. Brucite. Hamburgh. 
7. Black Mica, in augite. Cold-Spring. 
6. By J.P: Brac. 
In Southbury, the greenstone formation visible in Wood- 
bury continues west of the meeting-house, between the 
Pompanaug creek and the Housatonic—extending six or 
seven miles in length, being composed of several ridges, in 
all about a mile in breadth. The minerals connected with 
this range are :— =r 
_ 1. Chalcedony, resembling that of Patterson, N. J. of a 
beautiful blue—covered frequently by botryoidal concre- 
tions of cacholong. 
2. Amethyst. The crystals of this mineral are often quite 
regular, with both terminations visible, and the coloring 
matter more uniformly diffused than is common in the ame- 
thyst of Woodbury, New-Haven and Patterson. Some 
specimens which J saw in the cabinet of Dr. L. Smith were 
very beautiful. 
