64 STRATIGRAPHICAL GEOLOGY. 



In the first outcrop, about three fourths of a mile south of the north 

 line of Northumberland, the rock is a feldspathic quartz schist. On the 

 hill east there are large crystals of feldspar. At Groveton and half a 

 mile west we find a chloritic feldspathic schist, and interstratified with 

 this is a greenish siliceous schist, that dips W. 60°. On Jonathan Pond 

 brook, a fourth of a mile above the bridge, we find the feldspathic quartz 

 schist; and north, perhaps a mile from the bridge, there is a siliceous 

 schist that dips N. 60°; this rock in places contains a small quantity of 

 lime. The feldspathic chloritic schist comes in contact with the por- 

 phyrite on the west side of Mt. Lyon. The high hill south-east of 

 Northumberland falls is composed of this rock. In the south part of 

 Northumberland, about half a mile a little east of north from the place 

 formerly owned by O. S. Wood, the rock contains a large proportion of 

 hornblende, and with it there is a band of limestone, very siliceous, how- 

 ever — dip N. 60° W. 65°; a mile and a half south, on the road to Lancas- 

 ter, there is epidote with the chloritic feldspathic schist. On the hill east 

 of the Bellows farm the rock differs somewhat from the rocks elsewhere, 

 except in Vermont opposite, and it resembles a chloritic schist. Near the 

 school on Caleb branch there is a siliceous feldspathic schist ; near C. 

 Lee's, a chloritic feldspathic schist; near W. Savage's the rock is horn- 

 blendic. On the west side of Mt. Prospect the rock is a siliceous chlorite 

 schist — dip easterly. The rock between Lancaster village and Mt. Pros- 

 pect is for the most part the same, except that just above the spring that 

 supplies the Lancaster house there is a band of a highly siliceous lime- 

 stone. At S. H. Legro's the rock is decidedly feldsi^athic, and in the road, 

 a quarter of a mile north-east, there is an argillaceous mica schist. Mt. 

 Pleasant, and the ridge west, is a siliceous chlorite schist, except at the 

 western extremity, where it slopes towards the Connecticut, the rock is 

 hornblendic. At Z. and J. Dexter's the rock is siliceous and pyritiferous. 

 West of a small pond in the extreme south part of Lancaster the rock is 

 sandstone. Where the siliceous chloritic schist is cut by the railway the 

 rock is somewhat calcareous. 



Vermont. 



On the first road north of the Lancaster bridge, going west, the chlo- 

 ritic rock, so extensively developed in the east part of Guildhall, extends 



