MODIFIED DRIFT ALONG MAGALLOWAY RIVER. 1 39 



The level tracts on Magalloway river are described as especially re- 

 markable for the occurrence of sloughs or small ponds, which are almost 

 invariably found at a short distance on one or the other side of the 

 stream. The river-banks are everywhere low, and the wooded plains, 

 extending in places one half mile from the river, with a height rising 

 from 10 to 25 feet above it, consist of gravel, which is not often so coarse 

 as to have pebbles a foot in diameter. These are the characteristic feat- 

 ures of this river for most of its length, both above and below Parma- 

 chena lake. The only exceptions are the three or four miles just below 

 this lake, and about two and a half miles, called Escahos falls, next above 

 Wilson's Mills, where only the glacial drift is present, over which the 

 river descends in rapids obstructed by boulders. Along the greater por- 

 tion of its course the descent is very slight, and the crooked stream winds 

 slowly from side to side along its gravel plain. There seem to be no 

 kames on either this or the upper part of Androscoggin river. 



The fine alluvium brought down by the Magalloway has filled up a 

 considerable area about the mouth of Umbagog lake, forming an exten- 

 sive bog at the border of the lake, and reaching a height of lo to 15 feet 

 along the lower part of this river's course and on the Androscoggin to 

 Errol dam. There are no rapids below Wilson's Mills, and the Magallo- 

 way is navigated as far as to Wentworth's Location by a steamboat from 

 the lake. On other sides this lake has mainly hilly and rocky shores. 

 Its height is 1256 feet above the sea. 



Clear stream, along nearly its whole course from Dixville notch to 

 Androscoggin river, is bordered by low sandy plains. 



The modified drift of the Androscoggin above Dummer, along the dis- 

 tance which has no road, is described as consisting of tracts of swamp, or 

 of stratified gravel and silt in some places one half mile in width, having 

 a height of 10 to 25 feet. These are along level portions of the river, 

 which alternate with rapids where the glacial drift, or till, extends in gen- 

 tle slopes to the stream. 



The exploration of the Androscoggin river, with special reference to its 

 modified drift, extended nearly to the east line of Dummer, Below this 

 point the river flows south-westerly four miles to Pontoocook falls, and in 

 this distance is bordered on the north-west side by considerable areas of 

 alluvium from 20 to 30 feet above the river, extending from one half to 



