L. S. Hunt on Alpine Geology. 13 
synclinal exists inthe valley of Chamonix, between the two rup- 
tured and eroded anticlinals represented by Mont Blane and 
the Brevent. In illustration of this structure Favre has given 
a grand section commencing to the northwest in the mountain 
known as Les Fiz, which, overlooking the Col d’Anterne, rises to 
a height of 3180 meters and displays all the Alpine formations 
from the sandstones of Taviglionaz, overlying the nummulitic 
beds, down to the carboniferous, which is seen resting on the 
crystalline schists) These appear in the height of Pormenaz 
and in the Brevent, at the northwest base of which the carbonif- 
erous rocks are arranged in a sharp fold dipping beneath the 
crystalline strata. The latter to the northeast rise in the Ai- 
* See in this connection Hebert, Bull. Soc. Geol. de Fr., 2, xxv, 356. 
