546 STRATIGRAPHICAL GEOLOGY. 



reaching to the summit of the east and highest Uncanoonuc. There is 

 a large granite vein here also. At the east base of the mountain, back 

 of J. Person's, is gneiss, which may connect with that in the edge of 

 Goffstown Centre, upon Fig. 87. Mica schist next occupies the field 

 nearly to E. Dana's, save a narrow band of gneiss at G. Robertson's. 

 Gneiss occupies the rest of the way. The granite and schistose bands 

 found near the east band of quartz on Fig. ^ty, if present, are concealed, 

 as well as the quartz itself, beneath the drift. All the dips on this sec- 

 tion are also to the north-west. 



Fig. 89 illustrates the positions on the next line, perhaps the most 

 carefully explored of any, from P. Dodge's in New Boston to the north- 

 east corner of Amherst. The quartz dips 80° N. 80° W. Close to it is 

 a hornblende rock, almost a trap or sienite. Between W. Whittemore's 

 and N. Hall's, beds of mica schist with coarse granites occur. At New 

 Boston village are interstratified gneisses with twisted seams of coarse 

 mica schist. To the south-east thick drift deposits conceal the rocks, 

 supposed to be essentially gneiss, as far as A. Leach's, where it contains 

 ferruginous fragments, and is very much twisted, dipping in a general 

 north-west direction. By J. Fairfield's the gneiss dips 85° N. 60° W. 

 At the north base of Joe English hill the gneiss is much like the Concord 

 granite. The mass of the mountain is composed of similar material, 

 dipping 65° N. 80° W. This is a little south of the section. At S. Moor's 

 are other ledges, and at the school-house by a saw-mill, the gneiss carries 

 coarse granite veins dipping 15° N. 25° W. Following up the stream a 

 short distance, away from the regular road, are similar rocks tending to 

 dip in the opposite direction. Near here is the proper commencement of 

 a range of mica schist, that running between the Uncanoonucs, dipping 

 60° N. 50° W. Numerous granite veins or beds occur with them. On 

 top of the hill, near the west line of Bedford, these schists dip 75° N. 35° 

 W. They also crop out east of W. A. Hobart's, and along the east road 

 in the north-west part of Bedford, as far as W. D. and J. F. McPherson's. 

 Almost at the south line of Bedford, next Amherst, gneiss dips N. 40° W. 

 Next we find ourselves at the limestone quarry and quartz in the north- 

 east part of Amherst, with the dips of 80° N. 50° W. A short distance 

 northerly, in Bedford, there is a northerly-dipping gneiss. 



Fig. 90 illustrates the rocks from South Lyndeborough to the west 



