GEOLOGY OF THE MERRIMACK DISTRICT. 56/ 



village nearly due south to the Bridgewater boundary, a mile and a half 

 west of the Pemigewasset ; then it continues in the same direction along 

 the Bridgewater hills towards Peaked hill in Bristol. It may pass through 

 Bristol to connect with the anticlinal at a school-house in the south-east 

 part of Alexandria. The one along the river in Bridgewater and New 

 Hampton may be parallel. Fig 95 shows the relations of some of these 

 axes to each other. 



In Alexandria, at Lamore and Berry's saw-mill, the dip is 50° E. ; near 

 Mrs. L. Gale's it is 49° S. 6" E. At the mill and school-house No. 6 

 above, is the east limit of the porphyritic gneiss. There is a patch of 

 vertical schists in the north-west part of the town, in the great basin 

 above H. J. Welton's, and lying upon the porphyritic gneiss. At Bristol 

 village the rock is largely ferruginous, but at the south end of Newfound 

 lake it is light-colored and compact. 



In New Hampton the most northern outcrop of andalusite schist is 

 on the top of the hill south-west from C. Smith's, and over an interest- 

 ing glacial clay. The dip is 35°-4S° W. The same rock, with a similar 

 position, occurs in several other places in this town on the north-west 

 side of the porphyritic gneiss. At the north end of Shingle-Camp hill 

 it is much contorted, nearly vertical, with strike N. 30° E. The ledge 

 near the bridge over the Pemigewasset dips 50° S. 70° E. It is gneissic 

 in character, dipping 45° southerly, just before coming to Spectacle pond, 

 on the town line towaVds Meredith. At the south end of the pond the 

 schist is ferruginous, and dips more westerly. In the edge of Sanborn- 

 ton the dip is to the north-west. East from this point is the south-east 

 dipping gneiss of Cawley pond. From New Hampton village to the 

 crest of high land between Burleigh and Hussey mountains, drift prevails ; 

 but mica schist and gneiss occur near J, Merrick's, dipping 45° W. Fol- 

 lowing what was once a road from here to Cawley pond, I found, on the 

 Sanbornton line, mica schist, dipping 50° N. 50° W. At C. Emerson's, 

 the rocks are horizontal or dip 5° N. W., and hold some gneissic layers. 

 Next the gneissic layers prevail altogether, dipping 50° S. 75° W. South 

 of S. J. Dearborn's the schists dip 60° N. 60° W., occurring in high 

 embossed exposures. At S. Brown's the material is mostly siliceous. 

 Parts of it may be feldspathic, and approach the Concord granite in 

 character. This adjoins the supposed gneiss near Cawley pond, dipping 



