148 
SCENERY OF SWITZERLAND. 
tained in it. Fig. 31 is a photograph of the Hospice 
of the Grimsel, showing a remarkable case of such 
glaciated rocks. Similar surfaces occur, however, far 
away from the present glaciers and even in countries 
where none exist. The grey rounded bosses (Fig. 31) 
were termed by De Saussure “Roches Moutonnees,” 
from their frizzled surface. The term has been 
generally adopted, mainly perhaps because at a dis- 
tance they look not unlike sheep’s backs. Smooth 
rock surfaces may often be seen at the sides of val- 
Fig. 36. — Diagram of Crag and Tail. 
leys, sometimes at a great height — many hundred or 
even some thousands of feet above the present river, 
and far away from the present glaciers, as, for in- 
stance, on the slopes of the Jura. They are specially 
well developed where from a turn in the valley, or 
any other cause, the ice met with most resistance. 
The rocks at Martigny are a very fine example. 
They do not, however, generally rise to the upper- 
most ridges, which have therefore (Fig. 37) quite a 
different character. 
De Saussure first noticed the prevalence in the 
