coos AND ESSEX DISTRICT. 59 



valley of Cedar stream, between Pisgah and the Connecticut, an argilla- 

 ceous schist, passing into clay slate, forms a synclinal axis. 



Connecticut Lake and Southward. 



At the north end of the lake, near the house formerly owned by E. Day, 

 the rock is a chloritic schist, which dips N. 28° E. 85°. At A. S. Hug- 

 gins's, we find diorite. Half a mile west of the Col. S. Huggins place the 

 arenaceous sandstone schist dips N. 47° W. 75°. A mile west we find 

 diorite, and, at S. K. Danforth's, the arenaceous schist. At D. Day's 

 there is diorite, and towards R. W. Danforth's there is a green chlorite 

 schist which dips N. 48° E. 72°. At the outlet of Connecticut lake an 

 arenaceous schist dips S. 80° E. 50°. At the saw-mill on Perry stream 

 a chloritic schist dips S. 65° E. 75°. The diorite and arenaceous schist 

 extend southward along the road toward Canaan, Vt. West of J. W. 

 Heath's and J. P. Quimby's there are extensive outcrops of arenaceous 

 schist, with easterly dips. There are prominent ledges of diorite on the 

 road south of the red school-house. 



East Part of Clarksville and the Academy Grant. 



Between J. T, Amy's and Cedar stream, going south-east, the rock is 

 an arenaceous sandstone schist. Two and a half miles south-east of 

 Amy's we find a siliceous schist, approaching quartzite, that dips S. 62° 

 E. 85°; four and a half miles, a similar rock, but somewhat gneissic, dips 

 W. 82°. The remaining rocks of this area will be noticed in describing 



the section. 



Dartmouth College Grant. 



West of the Little Dead Diamond, on the north border of the grant, 

 there is a hydro-mica schist. On Linnell brook, a mile from the mouth, 

 the same schist dips N. 38° W. 75°. South, a fourth of a mile from the 

 mouth of the same brook, there is a mica schist, containing a great quan- 

 tity of bright iron-alumina garnets, which dips N. 35° W. 60°. The line 

 between the hydro-mica schist and mica schist, on the boundary between 

 Maine and New Hampshire, is about a mile south of the corner of Dart- 

 mouth College grant. On the Magalloway river the hydro-mica schist 

 outcrops seven miles above Wilson's mills, and, with the exception of a 

 gneissic area at Parmachena lake and an argillaceous sandstone schist 



