i88o-i88i.] 65 



Upper Grasmere, now silted up, has its lip formed by a well 



marked roche moutonnee. 

 Easedale Tarn lies at the foot of semi-precipitous slopes, is 70 



feet deep, and the lower end is enclosed by an ice-rounded 



hill, partially covered with moraine matter. 

 Codale Tarn, also at the foot of a precipitous slope — the lip of 



the tarn is of glaciated rock. 

 Stickle Tarn, at the foot of lofty precipices — the lip was not 



examined, but is said to be of rock. 

 Angle Tarn, at the foot of lofty precipices — the lip is a ledge of 



rock. 

 Filled up lake at head of Langdale, at the union of Mickleden 



and Oxenden, just where the glaciers that once filled these 



hollows must have united upon comparatively level ground, 



with a great increase of pressure. 

 Blea Tarn (of Wordsworth's solitary), just where the ice 



overflowed from Langdale, by Wall end, and met with two 



side streams from the mountains at each side. The flow 



would be checked by the ice worn hummock which still 



closes in the mouth of the tarn. 

 Little Langdale Tarn — After leaving Blea Tarn the stream 



meets the valley coming down from the west, and just below 



their union this tarn is found. 

 Levers Water ^ near Coniston, lies at the union of two "coums," 



or steep heads of valleys, and at the foot of a precipitous 



slope — the mouth is blocked by a mass of rock. 

 Low Water — at the foot of precipices on Coniston Old Man. 



Looking at these conditions, it is certain that many of the 

 above, and highly probable that all, are for the greater part of 

 their depth rock basins, which can have been excavated by no 

 other agency than moving ice exerting an enormous pressure. 

 The only legitimate way to deal with the subject is, to take the 

 tarns, and having satisfied ourselves as to the agent, of which 

 there can be very little doubt, by which they were formed, to 

 then examine whether the known conditions of the larger lakes 

 will permit of a similar hypothesis in their case. Perhaps the 



E 



