248 
SCENERY OF SWITZERLAND. 
From Ardez to Remus the river runs between 
Lias on the left, and (Haupt-Dolomite) Trias on the 
light, along a line of disturbance through which 
(franite. Gneiss, Serpentine, and other Plutonic rocks 
come to the surface. 
The Liassic rocks of this district fall into undula- 
Sc/iists 
153* — Section across the valley o. 
tions, the principal of which is the deep trough which 
has on the whole determined the course of the Inn, 
and has also given rise to the mineral springs at 
Parasp and Schuls. These are perhaps due to a 
fracture along the line of the valley. The tempera- 
ture of the water is not hot nor constant, which in- 
dicates that they do not come from any very great 
depth. ® 
From a little below Remus to Prutz the river has 
Liassic rocks on both banks, which below Martins- 
bruck takes the form of clay-slate, and through which 
