We visited
the place together, but could find no ice. The whole ground was composed
of a mass of loose round stones, with a covering of earth and moss, and
the air in the interstices was peculiarly cold and dry.]
[Footnote 136: _Beobachtungen_, &c. (see note on p. 258), 181.]
[Footnote 137: Reich found the temperature of the ice to be 31.982 deg. F.,
that of the air in the immediate vicinity 34.025 deg., and the rock, at a
little distance, 32.765 deg..]
[Footnote 138: iii. 150.]
[Footnote 139: See many careful descriptions of these caves in the
_Annales de Chimie_; also, an account by Professor Ansted, in his
_Science, Scenery, and Art_, p. 29. M. Chaptal (_Ann. de Chimie_, iv.
34) found the lowest temperature of the currents of cold air to be 36?.5
F.; but M. Girou de Buzareingues _(Ann. de Chimie et de Phys_., xlv. 362)
found that with a strong north wind, the temperature of the external air
being 55?.4 F., the coldest current gave 35?.6 F.; with less external
wind, still blowing from the north, the external air lost half a degree
centigrade of heat, while the current in the cave rose to 38?.
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