MEDOMAC VALLEY SYSTEM. 163 



SHORT ESKEES IN WALDOBOEO. 



Two small and rather level plains of sand and gravel are found a 

 short distance south of tlie terminal moraine in Waldoboro, elsewhere 

 described, one on the road from Waldoboro to North Waldoboro, the 

 other about half a mile east of this on the road to Union. Both seem 

 to be small marine delta-plains. Their north ends lie a short distance 

 south of the terminal moraine, but thus far I can not connect them with 

 this moraine in a genetic way. The marine clay covers the deposits on 

 the flanks and makes it difficult to trace the connections of these sands. 



MEDOMAC VALLEY SYSTEM. 



This system begins in the valley of the Medomac River about 2 

 miles north of Winslows Mills, and extends southward to Waldoboro 

 Village. For most of this distance its course is near the stream in the 

 lower part of the valley. The series consists of short ridges and elongated 

 mounds, or sometimes more nearly cones, separated by intervals of one- 

 eighth to one-third of a mile, and is discontinuous from one end to the 

 other. None of the deposits are more than about 20 feet high, and many 

 of them are much lower. They are often covered wholly or in part by 

 the marine clay. Toward the north end of the series the gravel is but 

 little waterworn, and at the last can hardly be distinguished from a sandy 

 till. The relations of this gravel system to the terminal moraine at 

 Winslows Mills will be referred to hereafter. 



Length, about 5 miles. 



LOCAL eEAVELS IN NOBLEBOEO AND JEFFERSON. 



A gravel ridge comes from the north and enters the so-called Great 

 Bay at East Jefferson. It can readily be traced northward up a hill for 

 about a mile, where it seems to end in a low pass. To the north of this 

 pass, in the northern part of Jefferson, is a short ridge of subangular glacial 

 gravel, but I could trace no evident connections southward. Gravels are 

 reported at various points along the Damariscotta Great Pond, but I am 

 uncertain whether they are old beaches or not. Near Muscongus Bay 

 station of the Maine Central Railroad is a small plain of glacial gravel. 

 Another appears about one-foui'th of a mile farther south, and a third 



