GEOLOGY OF THE MERRIMACK DISTRICT. 47/ 



hill, on the road turning to the left, about fifty rods east of J. T. Gale's, 

 in the gneiss, is a vein containing iron. This is crossed by a coarse 

 quartz vein. Near the house there is a fine-grained gneiss, which seems 

 to pass into a granular quartzite ; and in this is a large vein of quartz. 

 Near J. Clough's there is a fine-grained gneiss ; and west of Green moun- 

 tain there seems to be a granitoid gneiss. To the north there is a fine- 

 grained, thick-bedded gneiss as far as the south side of Pond hill. South, 

 three quarters of a mile from Clough's, we cross a band of quartz ; then 

 we have gneiss, — a dark, fine-grained variety. Still south, at an abandoned 

 iron mine, we have gneiss, which extends into the edge of Bath and out- 

 crops on the hillside east of J. Mann's. Along the road, on the north 

 side of the Wild Ammonoosuc, the first gneiss that is seen has a more 

 distinct, foliated texture than is common to the great body of the gneiss 

 in this section, and the quartz in it seems to be more abundant. The 

 thickness of this band is, however, quite limited. The gneiss, which is 

 fine-grained, continues nearly to D. N. Page's, where we have a band of 

 quartzite, and this outcrops nearly half a mile north of Page's. The 

 gneiss outcrops again east of Page's; and at L. W. Hubbard's we have 

 a chloritic rock. At Mrs. W. Grant's we find quartzite and a dark, fine- 

 grained gneiss ; then, eastward, there is gneiss, as already noted. 



In the north-west part of Benton the prevailing rock is gneiss, between 

 the quartzite and Tunnel brook. East of the quartzite, near D. Howe's, 

 we have a narrow band of hornblende gneiss that contains nodules of 

 epidote. This band may be the source of those immense crystals of epi- 

 dote that have been found in the south part of Benton and in Warren. 

 East of the hornblende rock we have gneiss, and it extends south to the 

 height of land. East of the road south of the height of land the rock is 

 coarser than the gneiss in general, and has some of the characteristics of 

 the porphyritic gneiss. West of the same road, the mountain ridge be- 

 tween it and the railroad is protogene gneiss. It is also the rock of the 

 railroad cut at Warren summit. From the western slope of Moosilauke 

 the common gneiss extends southward, and there is an outcrop at the 

 saw-mill on Baker's river, near J. P. Boynton's, and near Dr. D. C. 

 French's ; also, at the saw-mill below. At both saw-mills the water has 

 worn deep channels in the rock. 



Above Warren village, at S. Flanders's, we find common gneiss ; and 



