532 



JOHN L. RICH 



This condition of the stream, together with the occurrence of the falls 

 a short distance above and the rocks walls at X, indicates the presence 

 of a buried gorge extending at least as far north as the stream, beyond 

 which, if present, it is entirely concealed by drift. 



Only a few hundred feet west of the channel just described, and a 



Fig. 3. — Sketch of Wedgwood channel (i). Scale of contour sketch about 

 six hundred feet to the inch. The profiles are slightly exaggerated to bring out essential 

 features. 



Httle further up on the hillside (2, Fig. 2) is another of a strictly 

 marginal type which follows for over one-half mile along the hill. 

 There is here distinctly a channel within a channel; the smaller and 

 later one formed during the final retreat of the ice; the other at an 

 earlier date. The older channel is partially drift-filled, yet maintains 

 distinct banks throughout most of its course. The banks are not 



