GEOLOGY OF THE CONNECTICUT VALLEY DISTRICT. 321 



mile above is a more distinctly gneissic band, dipping 56° N. 62° W. 

 About the village of Swift Water are various exposures of a whitish mica 

 schist, from 40° to 55° dip in the same general direction. There seems 

 in many cases to be feldspar present ; certainly a hasty look would make 

 the ledges to be gneiss. On the north side of the river one ledge dips 

 50° N. 2° W. There is a band near a cemetery, in the south-west out- 

 skirts of the village, containing crystals of chlorite. Passing above the 

 village the dip rises to 80° and more, or, in order, 83° N. 54° W., and 82° 

 N. 74° W. The last is the most remote exposure seen. The rocks are 

 micaceous friable quartzites, decomposing so as to appear ferruginous. 

 There are thin, glossy black micaceous bands, of a few inches in thick- 

 ness, interstratified with the quartzites. This is at a bridge a mile and a 

 half above the village. A wide band of hornblende schist below the 

 bridge should not be forgotten. The gneiss above has a high dip. It 

 is possible that an anticlinal axis may be indicated by the divergence in 

 the steepness of the dips. There seems to be a prolongation of a spur 

 from the gneiss of Haverhill directly to this point of dip-divergence. 

 There is considerable lithological similarity between the rocks along the 

 Lisbon and Swift Water sections. 



The slate band (No. 4) of the section is quite interesting, as it can be 

 traced to Lisbon village, and perhaps Littleton, bounding the series on 

 the west. A conspicuous locality of it is at L Clark's, about two miles 

 east of Bath village. Going south-east from J. M. Nutter's, for a mile, the 

 following three dips were noticed: 80° N. 50° W., 68° N. 52° W., 60° N. 

 42° W. The rocks are mica schists, also, at W. Bass's. Ninety rods 

 south of W. Waddell's, the rock adjoining the mica schists is chloritic. 

 A quarter of a mile south-west of the Hon. A. S. Wood's we have mica 

 schist and hornblende rock somewhat calcareous. Next L Clark's slate 

 there is mica schist, and a slightly chloritic rock sixty rods north. Mica- 

 ceous quartzites occur half a mile south-west of S. Clark's, on the Bath 

 line, at L. Elliot's, and at J. Chandler's in Landaff. At S. Clark's there 

 is a mica schist, with acicular hornblende. By J. Chandler's we find a 

 little of the Coos group, also. West of Mrs. Bishop's, in connection with 

 the conglomerate referred to above, the dip is N. 40°-58° W. Across 

 the section, in Fig. 28, we have the following dips proceeding east : Slate, 

 60° N. 60° W. ; hornblende, 50° N. E., 50° N. 6f W. on hill-top, also 

 VOL. II. 41 



