,_ an 1726, p. 16.]
[Footnote 180: But see on this point the experience of M. Thury, in the
Glaciere of S. Georges (Appendix).]
[Footnote 181: Sir Roderick Murchison's suggestion of the possible
influence of salt in producing the phenomena of his ice-cave in Russia,
did not, of course, proceed upon the supposition of salt actually
mingling with water, but only of its increasing the evaporation of the
air which came in contact with it.]
[Footnote 182: _Mem. presentes a l'Academie par divers Scavans_, i,
195.]
[Footnote 183: A long account was published in a history of Burgundy,
printed at Dijon, in quarto, in 1737, which I have not been able to
find. It was from the same source as the account in the Hist. of the
Academy, in 1726.]
[Footnote 184: I took this earth to be a collection of the particles
carried down the slope of ice by the heavy rains of the month preceding
my visit. M. de Cossigny speaks of the abundant rains of July, his visit
being in August.]
[Footnote 185: _Recherches sur la Chaleur_; Geneva and Paris, 1792.]
[Footnote 186: P.
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