10 Prof. Pictet on the Ice-caves of the Jura and the Alps. 
ville to Cluse. One may form an idea of this- appearance, by 
placing a pack of cards on end, in such a manner that they open 
at the bottom, in a very acute angle, just sufficient to enable 
them, when supported against each other at the top; to main- 
tain this situation. 
After having travelled an hour and a quarter, we arrived at a 
place where the valley, now become very narrow, is shut up by 
a building, the door of which is the sole entrance by which one 
can penetrate higher into the domains which belonged formerly 
to the Chartreuse of the Reposoir. We found by the barome- 
ter that we had ascended 223.4 toises from Scionzier. 
After resting for a short time, we proceeded, and arrived at a 
quarter past ten, at the level of the Chartreuse, which we pass- 
ed, leaving it a little to the left. We saw from hence the high 
peaks, called Les Tours, which are above Sallanches, and whose 
highest summit is called Pierre Fercee , from a hole which is vi- 
sible in it. 
An inhabitant of the district informed us, that they are accessi- 
ble, although they have very little appearance of it. He had as- 
cended last year, and was the fourteenth to reach the highest 
point; his wife arrived the first, and they have made a party to re- 
turn this year, and plant a cross upon the summit. The barometer 
observed at the height of the buildings of the Reposoir, determin- 
ed the height of this Chartreuse to be 322.3 toises above the lake. 
We arrived at mid-day at a hut called Le Selle. We found by the 
barometer that we had climbed 113.3 toises from Reposoir; we 
had some difficulty in penetrating into the hut, besieged as it 
was by the cows, who had come to be milked ; but having once 
made good our entrance, we met with a most hospitable recep- 
tion, and milk in every possible form was presented for our 
choice. We left our poney here, in a very numerous society of 
quadrupeds. From hence it occupied us an hour and a quar- 
ter to reach the hut of Montarkt, where the cows were to ar- 
rive next day, to establish themselves for the rest of the season. 
From this hut we at last arrived at the Glacier, after a very 
steep climb for 40 minutes. 
It is situated, not in the southern face of the chain of the 
Vergy, but in the most western of the passes which separate the 
different summits of the chain, and at a short distance from the 
