THE LAKE OF GENEVA. 
85 
of the whole shore. The view of the lake, the 
magnificent groups of chestnuts, and the innumerable 
erratic blocks, give it quite a special character. 
The plain on the south side of the lake, and 
even the high terrace of St. Paul, above Evian, is 
entirely erratic, and due to the confluence of the 
ancient glaciers of the Rhone and the Drance. Ihe 
deposits attain an immense thickness in the valley of 
the Drance, above Thonon, from the study of which 
Morlot many years ago convinced himself of the 
existence of at least two glacial periods. 
The chain of the Voirons is an anticlinal N.S. 
ridge, overthrown to the west; and the arch is more 
or less profoundly broken to the Flysch, the Neocomian, 
or even the Malm.* 
The country about Vevey and Montreux is the 
Riviera of Switzerland. It is lovely now, but what 
must it have been before the monotonous terraces of 
the vineyards and the endless rows of vine bushes 
* Renevicr, Add. Pres. Soc. JJelv, des Se. Nat. 1893. 
