2 ] 2 
SCENERY OF SWITZERLAND. 
in all directions. Deep gorges, with perpendicular, 
almost overhanging, bellied walls, and abrupt termina- 
tions also frequently occur in Nagelflue districts, as 
for instance to the north of the Lake of Thun, on 
the Speer, and elsewhere. 
Glaciated regions present us two totally distinct 
types of scenery: a central or upper of bare barren 
rock with rounded outlines (Fig. 32 p. 132), and a 
peripheral ring of debris in scattered heaps and 
long mounds. 
These morainic deposits give a peculiar char- 
acter to the scenery: the country is diversified 
and irregular, thrown into confused heaps and de- 
pressions, which, as the lower or ground moraine is 
very impervious, often contain small lakes. They 
occur especially in well-watered districts, and the 
rich network of rivers often take very devious courses. 
Desor has happily characterised such a district as 
“un paysage morainique.” 
The scenery is again affected very much in con- 
sequence of the influence of different strata on 
streams and springs. For instance, in a country of 
hard impervious rock we have numerous little runnels 
which gradually unite into larger and larger streams. 
On the contrary, in a calcareous district, especially if 
fissured, we find, as for instance in parts of the Jura 
