+ Geology, &c. of the Connecticut. 
drawn—and therefore, the specific name above given, may 
not be unappropriate for this granite. 
A great part of this granite exists in beds in mica slate ; 
gneiss being a rare rock in the v vicinity. Indeed, it may be 
doubted whether the whole range is not in the form of beds. 
I think, however, it will be found that there is a central ridge 
which is fundamental, at least two or three miles broad, ex- 
tending from South Hampton through Williamsburg to the 
southwest part of Conway and northeast part of Goshen. 
Certainly, along this line little else appears but granite ; and. 
in some places, as at its northern extremity, this rock forms 
hills of considerable elevation, and snes ledges. Beds 
of Le eae may indeed be found in the vallies between 
hese ledges; but an observer as. ie passes over this region 
aa proceeds south to South Hampton lead mine, wil! find 
it difficult to persuade himself that he is not traversing an 
original fundamental* deposit of this rock. Or if it exist 
in beds alternating with mica slate, it will in some instances 
be found no easy matter to prove i it—the _mere fact that 
mica slate is. ound on both sufficient 
evidence : the same being the case with perenne ieee: 
I would here suggest whether the oa slate of this re- 
gion that contains beds of granite, may not be a newer for- 
ion, reposing immediately sae “alee granite nucleus 
whieh probably forms the basis rock in New-England. 
And wherever this mica slate and upper granite is worn 
away, or there is a projection in the nucleus, the basis rock 
may appear. Such a supposition will aceount for all the 
appearances of the region we are now considering, which is 
coloured on the map as granite. 
As we go east or west from what L have called the cen- 
tral ridge of this granite, the beds of this rock become more 
and more distinct, the mica slate, however, increasing in 
* “The term fundamental, has, it should a been prapryre predi- 
cated of a particular description of granite; for by the terms of the propo- 
sition, the bottom of this formation has never been seen, and consequently 
we have no means of a rmining whether it ba fundamental or not.’’—Ed. 
Rev. Jan. 1820, p. 89. 
But, we should ai on it be not proper to say of space, that it is in- 
— for the very r —_ we cannot limitit? And with equally g 
ason, it would s on may say of granite that it is rai pt be- 
cause we have never hound any other rock below a saitienlar description 
of it. 
