e snow freely from above, and was partly
filled with snow in July. Cold currents of air proceeded from the rocks
in the neighbourhood of the glaciere, giving in one instance a
temperature of 38 deg..75, the temperature in the shade being 51 deg.. Within
the cave, the temperature was 41 deg..

M. Morin visited this glaciere in August 1828. He describes it as a
sheltered hole, in which the snow collects and is preserved.

M. Thury examined it in August 1859, and gives the same account. He,
too, found the current of air which the younger Pictet discovered, but
in the cave itself the air was perfectly still.

It was clearly, then, no great loss to miss the Glaciere of the Brezon;
but that on the Mont Vergy, in the Valley of Reposoir, appears to be
much more interesting. Professor Pictet found himself sufficiently
strong after a day's rest to pass on to Scionzier, and up the Valley of
Reposoir, accompanied by the well-known guide Timothee, whose botanical
knowledge of the district is said to be perfect. He had conducted MM.
Necker and Colladon to the glaciere in 1807, and believed that no
_savant_ had since seen it. The rocks are all calcareous, with large
blocks of erratic granite. The glaciere lies about 40 minutes from the
Chalet of Montarquis, whence its local name of _La grand' Cave de
Montarquis_. Before reaching it, a spacious grotto presents itself, once
the abode of coiners: this grotto is cold, but affords no ice, and near
it M. Morin found a narrow fissure, leading into a circular vaulted
chamber 15 feet in diameter, in which stood a solitary stalagmite of ice
15 feet high.

The entrance to the glaciere itself is elliptical in shape, 43 feet
broad at the base, and the cave increases in size as it extends farther
into the rock, the floor descending gently till a horizontal esplanade
of ice is reached. This esplanade was 66 feet by 30 at the time of
Pictet's visit, deeper in the middle than at the sides, and mounting the
rock at the farther side of the cave; there was a small stalagmite at
one side, but that would seem to have been the only ornamentation
displayed. The temperature was 34 deg..7, a foot above the ice, and 58 deg. in
the external air. Timothee had been in the glaciere in the previous
April, and had found no ice,--nothing but a pool of water of
considerable depth. M. Thury, in August 1859, found two sheets of ice
in the lowest part of the cave: one, nearly 50 feet long, was partially
covered with w