coos AND ESSEX DISTRICT. 



65 



three quarters of a mile west of the Connecticut ; the dip 

 S. 70° W. 58°. Near Freeman's, of the county map, there : 

 ceous schist dipping W. 78°. Gray schist on High hill 

 and near C. Joy's dips N. 68° W. 65°. In road opposite 

 A. Benjamin's, gray siliceous schist dips N. 70° W. 80°; 

 half a mile west the same schist is vertical. West of 

 Mill brook the siliceous schist dips easterly. At Royce's 

 the rock is a siliceous mica schist dipping S. 70° E. 70°; 

 and west at a school-house a light gray siliceous schist 

 dips S. 50° E. 70°. South, on Mt. Tug in Lunenburg, 

 the gray siliceous schist dips N. 75° W. 73°. On the 

 road from Lunenburg to Concord there are many out- 

 crops of gray siliceous schist. Near the Baptist church 

 the dip is N. 57° W. 75°; where the road crosses Miles 

 stream the dip is N. yy° W. 72°; at S. Gaskill's — dip N. 

 80° W. 62°; on the south-west slope of High hill the 

 dip is E. 75°. In the last is a porphyrite, evidently pro- 

 duced by metamorphism from the siliceous feldspathic 

 schist. A mile south-west of West Concord a greenish 

 chloritic schist dips S. 50° E. 62°. This probably ex- 

 tends south to Lower Waterford. 



In Fig. 7 we have on the Connecticut Huronian rocks 

 dipping east. On Burnside mountain we have an axis, 

 with slate in the synclinal. Each group of rocks to the 

 west probably forms inverted monoclinal axes. 



MoNTAi.BAN Group. 



At the south end of Umbagog lake a gneissic mica 

 schist dips N. 65° E. 58°. In the south-east part of 

 Cambridge a hornblende schist dips N. 10° W. The 

 rocks of this group in Success will be noticed in de- 

 scribing the sections that pass through the township. 



SlIELBUR E. 



The rocks of Shelburne are remarkably uniform. 

 The gneiss contains quite a large proportion of mica, 

 VOL. II. 9 



