GEOLOGY OF TIO CONNECTICUT VALLEY DISTRICT. 443 



west corner of Winchester. The dip is usually to the east. At Hinsdale 

 depot the dip is 60° E. By R. Smith's, three fourths of a mile south, it 

 is 70° N. 56° E., and it is nearly due east between the last two. More than 

 a mile south of the depot it is also to the east, by S. Doolittle's (No. 177). 

 There is a granite vein east of school-house No. 6, besides the one 

 already mentioned in Section I. 



After crossing into Massachusetts the dips of the mica schists change 

 to the west, as No. 167; half a mile south of the line, a soft wavy rock, 

 inclined 80° N. W. A short distance further the schist is sandy, decom- 

 posing like siliceous limestone, almost vertical. East of Northfield vil- 

 lage, to the north and east of Mill brook, the mica schist is considerably 

 quartzose, dipping easterly. At Nos. 168, 170, the dip is irregular to the 

 north-west. It is about the same at 169. Returning by a more south- 

 erly route along Mill brook, we have, first, a northerly and then a west- 

 erly dip. No observations have been made farther south. 



A branch from this range crosses the Connecticut to South Vernon 

 from about school-house No. 6 of Hinsdale. Between the Whithed ceme- 

 tery and the railroad crossing above school-house No. 4, of Vernon, are 

 several exposures of staurolite mica schist dipping 40° S. 50° E. and east. 

 The most northern and southern exposures have the first position named. 

 There is some hornblende rock between the most northern ledge and the 

 Vernon gneiss. Just in the edge of South Vernon is some mica schist, 

 the thinning out of this area towards the railroad junction. 



Next we find the Bernardston area barely connecting with the mass 

 just described, through Nos. 165, 166. As alluvium covers the valley of 

 the outlet from Lily pond, we cannot be absolutely certain whether the 

 quartzites or the mica schists occur here. Before erosion, both may have 

 been here. Across the road from the limestone in gneiss (No. 11), mica 

 schist dips 50° S. 25° W. Next we find it on the state line section, 

 mostly dipping easterly, east of the road, and showing an anticlinal on 

 Pond mountain. From this mountain south-westerly to Fall river the 

 rock is mostly the pimpled mica slate. East of Bald mountain the dip 

 is south, then south-east. Near the end of a branch road (Nos. 128, 129) 

 there is a hard, siliceous rock, not well defined. The dip is usually small 

 to the south-east over all this area. It is last seen to the south-west, 

 about a mile north-east of Bernardston village. 



