GLACIAL DRIFT. 225 



upper Pemigewasset valley are grouped together in the table (p. 185). 

 The valley runs southerly, and the striae mostly conform to it ; at the 

 very entrance, high up, we have the course S. 8° W., above the Eagle 

 lakes on Mt. Lafayette. On the summit of Bald mountain, in the Fran- 

 conia Notch, the course is S. 2° E., with a large boulder of Bethlehem 

 gneiss on its summit. The same force went over Mt. Profile, leaving 

 many boulders of the same kind. It appears from these circumstances 

 that a large body of ice entered the valley from above, which must have 

 been a portion of the larger and older sheet. This and the later local 

 masses scored the vertical east side of Mt. Pemigewasset, with the course 

 S. 12° E., working southerly. Other examples occur through Lincoln 

 and Woodstock, following the valley. Were the forests cleared upon 

 both sides of the stream, many other interesting examples would be 

 found. At North Woodstock, the hills upon the west side display a 

 magnificent embossment on a large scale, as worthy of photographic 

 reproduction as those in Rumney. There seems to be more easting in 

 lower Woodstock and Thornton than is needful to conform to the valley. 

 This may be explained partly by the fact of local turns in the course, 

 not obvious, except on the ground. On the rim of the valley to the 

 south-east is the course S. 70° E., which may have influenced some- 

 what the direction of the ice lower down, yet is sufficiently different to 

 satisfy us that the marks in the valley were not produced by the same 

 movement. Through Campton the scratches essentially follow the val- 

 ley. A single case is reported from Mad river, high up, of a descent 

 N. 32° W., or down one of its tributaries. This will be an example of 

 the local movement, or possibly the result of a recent slide, described 

 in Volume I. Below Campton, the Pemigewasset glacier joined the ice 

 movement down Baker's river, and went with that over to Lake Winni- 

 piseogee. 



Androscoggin Movement. Should a glacier start from the Rangely 

 lakes and follow down the whole Androscoggin river, the course would 

 be to the south-west, then south, and then a turn to the east as far as 

 Bethel, in Maine. We have evidence of a strong south-east current over 

 Rangely lake, and in Upton on the east side of Umbagog lake, — a move- 

 ment not of a local character. Down the Magalloway river, close by the 

 College Grant, there was a well defined valley movement, S. 4° E., 



