148 G. II Stone — Drift Scratches in Maine. 



uncertain. The intersecting systems of scratches were traced 

 to within one-half a mile of the Kennebec River, and if an} r 

 fresh exposures could have been found, they might perhaps 

 have been traced quite to that river. No opportunity has yet 

 offered for excavation, which will be necessary for determining 

 the limits of the area showing deflections in the direction of the 

 ice-flow. The facts will be sufficiently indicated b} 7 a few 

 typical examples. All the angles given in this paper are cor- 

 rected for the magnetic variation, and are therefore azimuths, 

 not bearings. 



North Vassalboro, S. 11° W. 



S.E. part of Winslow, older strise S. 4° E. ; newer, S. 24° E. 



S. part of Benton, older S. 6° W. ; newer S. 26° W. 



Three miles S. of Clinton village, S. 24° W. 



Benton, N. side of Sebasticook, oldest series S. 14° W. ; next 

 later S. 24° W. ; and a very faint series comes last, S. 34° E. 



Winslow, one-half mile E. of Kennebec, older S. 24° W.; 

 later, S. 69° W. 



These observations plainly show movements of the ice in 

 more than two directions. The eastward flow in the S.E: part 

 of Winslow probably indicates a local movement down the 

 Sheepscot Valley. The valleys of the Kennebec, the Sheeps- 

 cot and the Penobscot are more favorably situated for local 

 movement than any other of the larger river valleys of Maine, 

 though perhaps the valle^v of the St. Croix should be added to 

 this list. The shorter valleys of the St. George, the Union, 

 the Narraguagus, the Machias, and the rest of the small coast 

 streams are equally favorably situated in the matter of direc- 

 tion, as they lie nearly north and south, but they do not pene- 

 trate the high ranges of hills which formed a barrier to farther 

 ice-flow southward after the ice became less than about 500 

 feet thick. Near the Sebasticook, the latest scratches are quite 

 shallow, and have not effaced the earlier ones as they have 

 done in the track of the local Androscoggin glacier. A fair 

 inference is that at the time when these latest scratches were 

 made, the ice was becoming thin and that the flow was not 

 long continued in the direction of the latest glaciation. Further 

 exploration will be needed in order to bring out all the facts ; 

 thus far we are justified in regarding these local deflections as 

 an incident of the decay of the great ice-sheet, at a time when 

 the local topography affected the ice-movements much more 

 than during the time of maximum glaciation. 



2 and 3. The Belfast and the St. George River Localities. 



These localities are so closely connected that they may best 

 be described together. For about ten miles north of Union 

 Village, the St. George River (St. George on the maps but 



