ee alee ads ee 
Geology and Mineralogy of a part of Massachusetts, &c. 13 
much in its composition as well as situation from the 
others included under the same name, that a specific name 
1s important. It occurs at a lower leve l, and is associ- 
ted with the mica-slate of the Taconick range. It is found 
west side of Saddle Mountain, in Lanesborough, 
e meeting-house in Lenox, on the northern part of 
Barrington, and at the east foot of Taconick Moun- 
tain: also along the - west of Williamstown. It is ues a 
very extensive rock, and must be considered as r 
associate of the principal rock, mica-slate. 
The preceding rocks, mentioned under u 
to me to occur in is, an e of them 
This view of these associated a is consistent 
with fact, and assimilates our geology more to the Euro- 
pean. 
4. GRANULAR LIMESTONE. 
Colored yellow. 
Although this mineral is not considered by the generality 
of geologists, as one of the continuous rocks or strata, but 
as forming only beds in the primitive pts yet the extent 
of it in this section renders it proper to treat of it in this 
connexion. Coarsely granular shail is found occa- 
—— in small beds or in large masses in most of the 
towns along the eastern part of this section. It occurs 
thus in Becket, Middlefield, and Savoy. There are, how- 
Washington, New Marlborough, into Canaan, oa ., and 
thence southwards to inert ma in Con. western 
states of Vermont and Connecticut. The limestone is de- 
cidedly granular. In the eastern it is more coarsely granu- 
lar and more highly crystalline. This difference is very 
obvious in the limestone of Adams, and that in Williams- 
