50 
SCENERY OF SWITZERLAND. 
I. Table mountains. 
II. Folded mountains. 
The highest points or peaks may be again 
divided into two classes — volcanoes, and those due 
to weathering. 
Volcanoes. 
Volcanoes have had comparatively little effect on 
the scenery of Switzerland. There is only one group 
of hills in Switzerland, those of Hohgau near the 
Lake of Constance, which is of Volcanic origin. 
There are indeed certain isolated masses of 
igneous rock, as for instance in the Chablais, and 
again near Lauchern in Wandelibach, which are pro- 
bably the necks of ancient Volcanoes. 
Mountains of Denudation. 
Let us imagine a country raised above the water 
with a gradual and uniform slope towards the sea. 
Rivers would soon establish themselves, guided by 
any inequalities of the surface, and running at more 
or less equal intervals down to the water level. They 
would form valleys, down the sides of which 
secondary rivulets would flow into the main streams. 
The rain and frost would denude with especial 
rapidity those parts of the surface which offered the 
least effective resistance, and thus not only would 
