SCIENTIFIC SURVEY. 33]^ 



full view, it is difficult for one to imagine that such mighty changes 

 have been effected in the face of our country. 



Trains of Boulders. 



A train of boulders was last year described in our report. Since 

 then Dr. True of Bethel has published further remarks upon that 

 example in the Proceedings of the Portland Society of Natural His- 

 tory, page 92. 



We have had an opportunity the past season of inspecting the 

 train of boulders in Wayne, formerly alluded to. The case is not so 

 distinct and impressive as we could have wished. The boulders 

 are arranged on a line, starting very near the "Devil's Cave," and 

 continue to North Monmouth, a distance of two miles or more. 

 The boulders are all of syenite, and their source can plainly be 

 traced to one hill. The course of the train, as well as of the striae 

 in the neighborhood, is due north and south. 



We learn on good authority that there is another good example 

 of a train of boulders ten miles long in Madrid. 



But the finest example of the kind we have seen or heard of in 

 Maine is at the Forks of the Kennebec. Mr. Murray of the Forks 

 Hotel took us east of the rivers about half a mile, where one end 

 of the train appears. There arc several kinds of rock in the train, 

 but all the pieces are crowded together as much as they would be 

 in a dilapidated stone wall. There were no spaces between the 

 stones large enough to permit the growth of vegetation. The train 

 is about three rods wide, and is known to be at least half a mile 

 long. How much longer it is, no one knows, and we had not the 

 time to ascertain. Its course is N. E. and S. W., or about that of 

 the Kennebec river, on whose southern bank it is situated. This 

 does not correspond with the course of the striae in the vicinity. 



Sea Walls and Lake Ramparts. 

 Three more sea walls were noticed the past season, but all of 

 them are small and of little consequence. Near Owl's Head, in 

 South Thomaston, there is a large pile of clean coarse gravel one- 

 eighth of a mile long, which must have been accumulated in the 

 same way as the sea wall in Tremont. It is exposed to the full 

 force of the ocean's waves. Another wall is at Mosquito Harbor 

 in St. George. It is of less length than the first, and the road 



