6 Geology, Sc. of the Connecticut. 
ite does not occur in the form of beds or veins. We are 
not yet, however, prepared to believe any one could con- 
clude that it does. #ast-Haven granite, Black Mountain, 
a part of Leverett range, &c. stand as yetin the way of 
such a supposition. Still less are we ready to adopt the re- 
cent opinion of a distinguished European geologist,* that 
granite is not a primitive rock, and that the only two rocks 
that are so, are mica slate a gneiss! 
us have we in New-England, as in the east of Ireland, 
granite of a decided character alternating with mica slate. 
But this ceases to excite any surprize, since Von Buch and 
and Jameson have given us an account of the strata of Chris- 
tiana and we on.t 
The texture of the South Hampton granite is generally 
rather coarse. There is, however, in this respect, a great 
variety. The felspar is usually of a fine white colour, and 
the quartz and mica alight gray. I do not here, however, 
speak of the granitic veins, some of which traverse the 
granite itself, and the felspar of which is sometimes flesh 
coloured. ‘The beds of the South ‘Hampton granite =x 
not rich i in minerals, except the lead mine in that tow 
The veins in this rock, however, contain the fine Sbiit hulls 
and beryls of Chesterfield, and Goshen, and Haddam. 
Biack Mountain. 
This lies in Dummerston, Vermont, and consists of gran- 
ite. A geologist standing in Brattleborough on the argillite 
- issurprized on looking northwesterly, and seeing only four 
or five miles distant, an abrupt mountain 500 or 600 feet 
* Dr, Borré. 
+ Porphyry in immense mountains reposing upon lime stone full of petri- 
factions; a sienite over this Porphyry, consisting am entirely . coarse 
lar felspar, and in the same manner, a granite not different in its 
pon teal from the granite of t the oldest sinkibkine engl ite hie transi- 
tion lime stone ! —e asa Wr siuced of the transition formation !’—Vor 
Buch’s Travels in, Norway. 
Order of the transition rocks around Christiana, beginning at the top and 
reckoning downwards. 
at Zircon sienite. 2. Granite, 3. Porph 4. Sand stone. aelbe* slate. 
t 
ry. 4 
gray 7. Compact slate and black orthoceratite lime- 
stone. 8. Granite, 9, Clay slate end Ta limestone, probably. 10. Gaels: he 
