Stone.] 448 {March 3, 
straight on south across it, and then ends on the northern slopes of a 
high range of hills. Here is a gap of about three miles where there 
are only a few small gravel beds, and then a number of large ridges 
begin near the north side of the valley. They cross it obliquely, and 
run southward through a low pass which skirts the western base of 
Hogback Mountain in the northern part of Montville. They thence 
continue down the valley of a branch of the St. George’s River, and 
end in a large sand and gravel plain near the north line of Sears- 
mont. A few small ridges are found below here, and perhaps this 
kame-stream once flowed to the sea, but if so the gravels are now 
disguised by Champlain clays. Length of system about 40 miles. 
XVI. Montville — Liberty System. 
A local system ending at the south near True’s Pond in Liberty. 
Length about 5 miles. 
Note. Thecoast region lying between the Kennebec River and 
Penobscot Bay contains less gravel than any other region of its size 
in Maine, situated within one hundred miles of the coast. 
This is caused by the high hills to the north which formed a bar- 
rier to the escaping waters except in Albion and Montville, and there 
the gravels do not seem to have reached to the sea as they do farther 
to the east or west, at places where there are low passes lying to the 
north. 
XVII. China — Alna System. 
Extends from the northern part of China through and along China 
Lake past South China, and then in nearly a straight line through 
the villages of North Windsor and Windsor to the Sheepscot River 
in Whitefield and thence into Alna where in the form of sand plains 
it ends, unless a short kame in Georgetown be aconnection. Through 
Windsor the ridge is from one-fourth to three-fourths of a mile wide 
and near one hundred feet high, with three or four gaps of near one 
milé each. These flat-topped ridges or solid plains form a remark- 
able feature of the landscape, and contain but few funnels. In one 
placé a short high ridge is covered with angular erratics and a mass 
resembling till in structure, and local deposits of the same kind 
abound. Length 32 miles. | 
XVIL a. Albion — Whitefield Kames. 
This series begins about two miles north-east of Puddledock in 
Albion as a terrace from one-eighth to half a mile wide and rising 
about seventy-five feet in height above the flood plain of 15-Mile 
Stream. To the northward lies a plain deeply covered by marine 
