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 water; the other, presenting an area of about 14 square yards, showed more water still.

There were no stalactites and columns such as M.Morin had found in August 1828, nor even the low stalagmite which Pictet saw in 1822.

The summers of 1828 and 1859 were exceptionally hot, and this fact has been held to account for the smaller quantity of ice seen in those years.