CLIPTON-LAMOINE SYSTEM. 119 



PEAKED MOUNTAIN ESKERS. 



A series of ridges somewhat like an interrupted osar extends along the 

 valley of a small stream that flows northward jjast the western base of 

 Peaked Mountain, in the eastern part of Clifton. The series seems to end 

 in front of a rather low pass leading southeastward through the high 

 granitic hills. According to general analogy, this small stream must have 

 flowed southeast through the pass, although it has not deposited much, if 

 any, gravel on the steep slopes. It is possible that its course lay past Hop- 

 kins Pond to the plain in the western part of Mariaville, above described. 

 I have not explored the indicated route, which is quite inaccessible. 



CLIFTON-LAMOINE SYSTEM. 



This series appears to begin as an osar ridge about one-fourth of a mile 

 northwest of Clifton Post-Oflice. From thence it extends for about 1 mile 

 southeastward, when it turns nearly east and crosses the granite hills by a 

 pass about 80 feet above Clifton (PI. VII, A). This is the lowest place in the 

 granite range to be found in this vicinity. The gravel is scanty at the top 

 of the pass, but on the down slope soon becomes very abundant and expands 

 into a series of two or more large ridges inclosing kettleholes. It soon turns 

 nearly south along the valley of a brook past Floods and Spectacle ponds, and 

 then in Otis spreads out into broad plains from 1 to 1^ miles wide. These 

 extend several miles southeastward into the northern part of Mariaville. 

 These plains are rather level on the top, and the sediment passes from 

 coarse gravel and cobbles on the north to horizontally stratified sand on the 

 south, which in turn ends in the marine clays. This joroves that the plains 

 of Otis are a delta deposited in the- open sea. South of these plains the 

 system becomes discontinuous. After a gap of somewhat more than a mile, 

 a rather broad ridge of very round gravel, cobbles, and bowlderets begins 

 a short distance northwest of the tannery in Mariaville and extends nearly 

 south for 3 miles. Another ridge lies about 1 mile west of this, situated in 

 the southeast part of Otis, and it extends farther south than the first, so that 

 they are arrayed en dchelon. These ridges are several hundred feet broad, 

 with very gentle side slopes. Two or three miles south of the last-named 

 ridge is Beach Hill, a nearly round mound or massive plain of glacial 

 gravel, more than one-fourth of a mile in diameter, and rising steeply about 



