64 NEVv loRK STATE MUSEUM 



2 S 40° W, on the roadside 2 miles northeast of Lake Pleasant 



village. 



3 S 45° W, on the roadside i mile south-southeast of Lake Pleasant 



village. 



4 S 40° W, on the roadside i^ miles southwest of Lake Pleasant 



village. 



5 S 40° W, on the roadside 1% miles west of Lake Pleasant village. 



6 S 15° W, on the roadside ij^s miles southeast of Speculator 



village. 



7 S 30° W, where the road crosses the summit of West hill south- 



west of Wells village. This is the finest example of a glaciated 

 rock ledge noted in the whole quadrangle. An area of fully 

 one hundred square feet on the dark hornblende gneiss is 

 beautifully polished and groved. 



8 S 15° W, about half way up the west face of Wallace mountain, 



at many places on several vertical ledges — one of them 40 feet 

 high and 100 yards long — of Grenville light gneiss, the rock 

 wall is worn smooth and glossy and shows distinct glacial striae. 



9 N-S. In the field i mile northeast of Benson village. The prin- 



cipal mark is a shallow grove 2 feet long. 



In addition to these, a number of ledges just off the map and i 

 mile due northwest of Speculator village are beautifully polished 

 and striated with striae bearing S 30° to 40° W. The small num- 

 ber of observed striae within the quadrangle as compared with the 

 large number recently located by the writer on the North Creek 

 sheet is largely due to more numerous traveled roads within the 

 latter region, because in working the roads Postglacially un- 

 weathered ledges are often uncovered. With the Lake Pleasant 

 quadrangle seven of the nine observations were made along the 

 roads. 



In the northwestern portion of the quadrangle there was clearly 

 a strong southwesterly ice current perfectly parallel to the trend of 

 the main valleys and ridges. The ice in the valley at Wells moved 

 S 30° W across the tops of West hill and perfectly parallel to the 

 fault rift valley. Between Wallace and Three Ponds mountains, 

 the ice movement was parallel to the eastern side of Cathead moun- 

 tain ridge. Just how far the direction of ice movement was deter- 

 mined by the topography can not be said, though there can be no 

 doubt that the undercurrents at least were forced into almost per- 

 fect parallelism with the trend of the valleys. 



During the time of maximum glaciation, however, the general 

 ice movement across the quadrangle must have been toward the 



