GEOLOGY OF THE COAST DISTRICT. 613 



moon pond, and the outcrop is obscure near G. Hill's. Near the west 

 line of the town, west of T. Hill's, the strike is north-east. These 

 observations indicate great irregularities: first, a synclinal cast of New 

 Durham church ; an anticlinal to the west, before reaching Alton ; and 

 a possible synclinal in Alton. The strike conforms with the ridge, north- 

 west, a part of the way, which is an unusual course. In Strafford, the 

 band crops out a mile east of Bow lake, in district No. i6, the gneiss near 

 by dipping 45° N. W. On the eastern side of the lake, farther north, the 

 vertical strata run N. 20° E., and others dip N. 40° W. near by. This rock 

 occupies the north part of Northwood, at the " Narrows," and about Bow 

 and Long ponds is believed to dip westerly. The stone at the Bow lake 

 outlet dam is well-defined gneiss, and comes from a quarry to the west of 

 the village. No ledges except gneiss were met with between the outlet 

 and East Northwood, and also from the same beginning to the west cor- 

 ner of Barrington. North of James Crawford's, in Strafford, the gneiss 

 dips south ; a little to the south is a fine, dark colored variety, with the 

 inclination S. 20° E. Close by the small pond in the west corner of Bar- 

 rington is a knob of coarse, hard granite, seemingly the prevailing rock 

 for a mile into Nottingham. 



Barrington and Candia Range. It is probable that most of Barrington 

 is underlaid by gneiss, while observations respecting it are very meagre. 

 It is the north-east end of the Manchester band of the Merrimack dis- 

 trict, and does not extend into Rochester. The town consists of hills of 

 coarse granite, not of large size, with schists between in the valleys, the 

 latter having suffered the most from denudation. The specimens col- 

 lected from. Section IV resemble the Montalban series. In the south 

 corner of the town, near E. Randall's, is gneiss ; and at school-house No. 

 9 it dips south-east. At Thompson's, close to the Nottingham line, well- 

 defined gneiss dips S. 60° E. At a saw-mill half a mile west the same 

 rock occurs. The low country to the west reveals similar ledges, as at A. 

 Witham's, dip S. 80° E., and near the Baptist church. There seem to be 

 mica schists in the north part of Nottingham, but most of the west part 

 of the town is believed to be underlaid by this gneiss. There are a few 

 ledges of it between the north outlet from Pawtuckaway pond and the 

 west town line. In Deerfield there are similar ledges on the road from 

 the Square to the Parade, and on the height of land coming very close to 



