THE REUSS. 
201 
CHAPTER XXIl. 
THE REUSS. 
In previous chapters we have rapidly traced the 
great longitudinal valley of Switzerland from Cha- 
mouni to the confines of Germany. 
We will now in the same way consider the two 
great transverse valleys of the Reuss and the Ticino, 
which cross the Rhone-Rhine Valley more or less at 
a right angle, thus dividing Switzerland into four ap- 
proximately equal parts. 
The remarkable evidence of glacial action pre- 
sented by the Lower Reuss has been referred to in 
the chapter on Glacial Phenomena (vol. i. p. i6o), 
the probable origin of the Lake of Lucerne has been 
alluded to in the chapter on Swiss Lakes (vol. i. 
p. 248), and the surrounding mountains in that on the 
Outer- Alps (ante, p. 54). 
The Lake of Lucerne is 437 metres above the 
sea and is 223 metres in depth. From an ancient 
delta of the Muotta, and remains of terraces, it would 
