GEOLOGY OF THE CONNECTICUT VALLEY DISTRICT. 413 



The next outcrop southward is on the ridge extending northward from 

 Oak hill, where it contains pebbles, and encloses many large fragments of 

 the argillaceous staurolitc schist so extensively developed to the east in 

 Charlestown. South of the summit of Oak hill it turns eastward, and 

 crosses the road just north of the grist-mill. Here it turns to the south 

 again, and crosses the road running east from the grist-mill near H. 

 Hall's; thence extending south it forms the summit of the hill directly 

 east of the village of Charlestown, but at the south end of this hill it very 

 suddenly disappears. Towards the south part of the town, and on a ridge 

 south-east of school No. i, we have probably the same band of rocks. 

 The band comes to the road near A. Powers's, and it extends north-east 

 towards H. Hull's, Jr.; but the band of quartz schist that extends along 

 the road north of Hull's does not so clearly belong to this group of rocks. 



The Eastern Band. 



The ridge of Perry mountain is in part quartzite ; but there is a large 

 proportion of quartz, which is intrusive with other rocks. At the first 

 cemetery west of Unity Centre there is a band of quartzite which ex- 

 tends through the town. South it runs nearly parallel with the road, and 

 extends into Acworth; northward it crosses the road near P. Smith's, 

 and outcrops between J. Luf kin's and Mason Huntoon's, but probably 

 disappears beneath the mica schist before it reaches Newport. South of 

 Unity Centre and east of A. C. Sleeper's there is an outcrop of quartzite, 

 but it is very limited. On the road from Unity Centre to Gladden hill, 

 just east of the stream near school No. 3, there is another band of quart- 

 zite ; also directly south, at the forks of the two branches of Little Sugar 

 river, there is quite an extensive outcrop. An extension of this band 

 can be seen on the east of the road going south from this point towards 

 Acworth. 



Acworth. In this town the last-mentioned band of quartzite crosses 

 the road going up the hill south of K. Smith's. Just south of William 

 Putnam's, on both sides of the road, quartzite is largely developed. Half 

 a mile south of Putnam's it is on the east side of the road only, and far- 

 ther south it has not been traced, unless the small outcrop that crosses 

 the road running north-east from Acworth Centre is a continuation. In 

 the west part of Acworth, extending along the border of the town, there 



