J. Deluc wrote against it in the _Annales de
Chimie et de Physique_ of the same year, 1822.[192] Deluc had not seen
any glaciere, but he was enabled to decide against the cold-current
theory by a perusal of Pictet's own details, and of one of the accounts
of the cave near Besancon. He objected, that in many cases the ice is
found to melt in summer, instead of forming then; and also, that in the
Glaciere of S. Georges, which Pictet had described, there was no current
whatever. Further, in all the cases of cold currents investigated or
mentioned by De Saussure, the presence of summer ice was never even
hinted at, and the lowest temperatures observed by him were considerably
above the freezing point. I may add, from my own experience, that on the
only occasions on which I found a decided current in a glaciere--viz.,
in the Glaciere of Monthezy, and that of Chappet-sur-Villaz,--there was
marked thaw in connection with the current. In the latter case, the
channel from which the current came was filled with water; and in the
former, water stood on the surface of the ice.
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