GLACIAL DRIFT. 223 



Baker^s River aftd Winnipiseogee Movement. This is an interesting 

 example of a movement seemingly both local and hardly separable from 

 the action of the continental sheet. It starts with a south valley in Ben- 

 ton, curves to the east with Baker's River valley in Rumney, extends 

 nearly due east over Squam lake and Sandwich, and then enters the val- 

 ley of Winnipiseogee lake, merging into the normal south-east course 

 after leaving this hydrographic basin. Allusion has been already made 

 to the latter part of its course (p. 121 ^/ seq^j. The movement down the 

 upper Pemigewasset may be regarded as a branch of this. 



On the summit of Moosilauke the striae run S. 22° E., a course less 

 easterly than is common over the high mountains of the state. This 

 corresponds with the direction through Warren and Wentworth, save a 

 few local tributaries in Warren mentioned in the table. The easting 

 seems greater than the proper course of the valley ; but a correspond- 

 ence was noted between the direction of the striae and of the depression 

 when the observation was recorded. The numerous observations in 

 Rumney indicate a gradual bending of the scratches in complete agree- 

 ment with the change in the course of the valley. On the south side, 

 the south-east course does not reach the top of the rim, as the directions 

 in Groton on the ridge between Baker's river and Cockermouth brook 

 are S. 22° and 32° E. The glacier was certainly 500 feet thick, and prob- 

 ably not much more at this point. In the west part of Plymouth and the 

 south-east corner of Rumney are remarkably fine examples of striation 

 and embossment of the ledges. I hardly think a finer place could be 

 found for a photographic representation of these phenomena than of the 

 east base of Hawks mountain in Rumney. A spur of the hill projects 

 into the valley, which was struck powerfully by the ice as it descended, 

 beautifully embossing the schists and scoring the domes with striae. One 

 ledge has numerous large blocks of stone on top, some measuring as much 

 as 20 feet long, 10 wide, and 8 high. Further west the mural striated 

 surfaces are common, as between A. Kelley's and J. Davis's houses. 

 On the north side of the valley two elevated ranges come close to the 

 river, — Rattlesnake and Stinson mountains, — which are precipitous for 

 two hundred feet. On these steep sides striae are often visible, though 

 much of the rock containing them has fallen to the base of the hill. 

 Wolf hill in Plymouth, a solitary bunch of granite in the midst of a low 



