382 BOARD OF AGRICULTURE. 



passes over it. The third example is near the Herring Gut Light 

 House in Gushing. 



The nature of the lake ramparts, with the theory of their supposed 

 origin, has been given under the description of the phenomenon at 

 Wawbawsoos lake. Other examples have been alluded to at Baker 

 lake and Junior lake. 



Dr. DeLaski of Vinalhaven, having been invited to give some 

 description of the glacial phenomena about Penobscot bay, has 

 kindly consented, and has furnished ns with the following state- 

 ments : 



Ancient Glacial Action in the Southern part of Maine. 

 To Mr. George L. Goodale : 



Dear Sir : — I herewith comply with your request to furnish for 

 the ensuing Report of the Scientific Survey of the State of Maine, 

 an account of ray examination of the boulder evidence of the Pe- 

 nobscot bay. 



The very limited space suggested by yon, will permit me to do 

 nothing more than merely notice a few of the facts which bear upon 

 the question regarding the nature of boulder action in tlie locality 

 named. I prepared a series of Articles during the past summer 

 for the " Rockland Gazette," on the " Ancient Great Glacier of the 

 Penobscot Bay," in which I went over in detail, the phenomena I 

 had observed, and the grounds of tlic principal theories which 

 have been brought forward to solve the mystery connected with 

 the drift. 



From careful personal examination of the surface of the islands 

 and borders of tlie great Fiord of tlie southern coast of Maine, I 

 have been forced to the conclusion tliat a glacier once occupied 

 that margin of the state, of a magnitude sufficient to co^■er the 

 highest hills of the region, and to extend far into the interior to- 

 wards the north. From a glance at the correct county maps of the 

 locality, we observe that the general trend of the islands, head- 

 lands, streams, lakes, harbors, creeks, coves, &c., is north-south, 

 suggesting some law of formation. In these directions, I make no 

 allowance for magnetic variation, which is considerable in the Pe- 

 nobscot bay. There are indeed departures from this rule as in 

 the cast-west direction of the groat thoroughfare separating the 

 Fox islands, where the natural boundary between the two towns 

 was set up at an infinitely earlier period than that of the boulder 



