KAMES. 349 



posited the strata of sand and gravel forming the above- 

 mentioned delta-plain.* 



This is but a type of innumerable other places. As the 

 ice receded and the month of the kame-streams retreated to 

 the north, the line of these deposits receded, and deltas were 

 pushed out now upon one side and now upon another of the 

 central kame. Often one can see these aprons of stratified 

 deposits stretching out from the base of the kame into a 

 swamp, the stream at that point not having been stationary 

 long enough to allow the whole depression into which it was 

 flowing to become tilled with silt. Nearly all of the exten- 

 sive gravel deposits in New England are thus related to some 

 kame system, so that, when once their origin became under- 

 stood, they were the means of assisting in the discovery of 

 the kames themselves. An interesting illustration of this 

 occurred in the case of the kames running through the 

 Rangeley Lakes from north to south, and extending to the 

 Androscoggin River and beyond, south of Andover, Me. 

 From the extent of the gravel plains to the north of Port- 

 land, Mr. Upham had surmised that a kame-stream must 

 have come down from the north to account for the deposit. 

 My brother, Rev. W. E. C. Wright, was soon after requested 

 to look for such a kame in the course of a pleasure-trip he 

 was about to make to these lakes. This he did, and the re- 

 sult was that, what Mr. Upham had seen with the mind's 

 eye, the summer tourist had no difficulty in finding in reality. 

 The kame can be traced up the stream not only to the lakes, 

 but through and across them — their backs appearing occa- 

 sionally above the water, and their line forming a shoal from 

 one side to the other 



These aprons of over-wash gravel, marking the deltas of 

 the kame-streams during the close of the Ice age, also char- 

 acterize the whole glacial border to a greater or less extent. 

 The entire south side of Cape Cod and of Long Island f pre- 



* See niap, p. 344. 



f See " The Geological Formation of Long Island, New York, with a Descrip- 

 tion of ite Old Water-Courses," by John Bryson, 1885. 



