242 Lead Mines, &c. of Hampshire County; Mas>. 
ken up, with only now and then a boulder to be seen, but 
north in Conway, and east in Whately, the stratum is less 
disturbed, and may be seen in patches, and sometimes the 
stratum may be traced many rods in length. It occurs in 
the two latter towns in such abundance, that were it not for 
the silex and mica in it, lime might be made in sufficient 
quantities to supply all this region. I have often seen veins 
of granite, in this rock, of all sizes, up to three feet in width. 
In Goshen and Chesterfield this limestone is found im large 
quantities, and in addition to the silex and mica, it contains 
a portion of hornblende, which renders it still less valuable. 
The hornblende is scattered through the limestone in a semi- 
crystalized form, and is so firmly incorporated, that it will 
madera fracture iv common with the rest of the roc 
e often seen boulders of this rock that had neat of 
mica ra and granite wy Avra it, as in the profile 
following. 
————— 
This limestone often aidtiaies with mica slate, and fre- 
quently passes into it by assis gradations. I have often 
seen a ledge pt was limestone on one side, but on the other 
mica slate. It reqnently Seerates with the hornblende 
stratum, or gre SRS or sienitic granite, and where it end 
be measured, it is generally about six feet thick. At a 
cality in the ‘south-west part of Whately, the strata of ik 
are completely turned upon their edges. Here mica slate, mi- 
_aceous limestone and hornblende alternate. ‘These strata 
appear to have once covered granite, and to have 
been thrown back into their present position, by some con- 
vulsion of nature, as in the sieinaee! profile. 
eee a 
Here, 1 represents a stratum Bom mica slate, resting upon @ 
protrusion of granite. Between this and the strata, ina ver 
tical position, ioe a small stream. 2 Represents a. 
stratum of mica slate, four inches in thickness; 3, a stratum 
prmeeigs seven feet thick ; 4, mica slate, four 
- fi $y Lsienitimepnite;: thirteen feet ; 6, mica slate six feet; 
