134 STRATIGRAPHICAL GEOLOGY. 



schists extend about to the cascade, though none of our specimens came 

 from a mile and a half beyond the neighborhood of the Lincoln post- 

 office. At the post-office the dip is 50° N. 57° W. Section VIII shows a 

 profusion of specimens belonging to this formation between the Pemige- 

 wasset river and the granite, a quarter of a mile east of T. C. Pollard's. 

 The gneissic character is well shown in most of the specimens ; and the 

 dip near Pollard's is about eighty degrees north-westerly. At P. Russell's, 

 in North Woodstock, the gneiss dips 70° S. 73° E. It is traversed by a 

 trap dyke six feet wide, also by a thirty-feet band of granite. Near J. M. 

 Rowe's a similar rock somewhat ferruginous dips y8° S. 38° E. Passing 

 from the Pemigewasset to Russell pond we see first a variety of unclean 

 gneisses and mica schists dipping 70° S. 63° E. A little south-west from 

 the pond there are mammoth veins of coarse graphic granite carrying 

 beryl, rough quartz crystals, and plumose mica. The strata somewhat 

 to the south stand upon their edges, with a north-south strike. East of 

 the pond a gneiss containing garnets dips 50° N. 42° W. Still farther 

 east the rock is ferruginous on the west side ; and there is a large vein of 

 granite on top of a ridge, not the highest part of the water-shed. Just 

 below Woodstock, P. O., an imperfect gneiss dips 80° S. 82'^ E., with 

 many contortions. At Norton's falls there is an anticlinal in a granitic 

 gneiss, possibly belonging to the porphyritic series, with the strike N. 

 13° E. This may be the northward continuation of the axis mentioned 

 on page 102. 



At E. Merrill's, in the north part of Thornton, there is a coarse granite 

 with gneissic layers dipping 60° S. 18° W. Near Mrs. G. W. Grant's the 

 rock is ferruginous. South-west from H. Fifield's, on the Woodstock 

 line, the gneiss dips 65° N. 52° W. In the direction N. 8° E. from 

 Fifield's there is an enormous vein of coarse granite east of the ridge 

 running up to Russell pond. There is a low gap in the rim of the Pemi- 

 gewasset which is 904 feet above the sea, and not more than fifty feet 

 higher than Fifield's house. The ridge rises steeply to the north, and 

 the schists there arc not uniform in position. Hix and Wanosha moun- 

 tains in Thornton are small eminences of the Montalban gneiss, and they 

 are by no means the formidable summits they seem to be on the county 

 map. Between them, near M, Sargent's, the rock is considerably ferru- 

 ginous. At J. F. Morrill's, at the end of the road, the gneiss dips 70° N. 



