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5. On some properties of Ice near its Melting Point

Published online by Cambridge University Press:  16 March 2015

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Extract

“During the last month of March. I made some experiments on the properties of ice near its melting point, with particular reference to those of Mr Faraday, published in the Athenæum and Literary Gazette for June 1850, to which attention has been more lately called by Dr Tyndall and Mr Huxley in relation to the phenomena of glaciers.

“Owing to indisposition, I have been obliged to leave my experiments for the present incomplete. But I am desirous, before the session of the Royal Society closes, to place on record some facts which I have observed, and also some conclusions which I deduce from these and other recent experiments and discussions.

Type
Proceedings 1857-58
Information
Proceedings of the Royal Society of Edinburgh , Volume 4 , 1862 , pp. 103 - 107
Copyright
Copyright © Royal Society of Edinburgh 1862

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References

page 104 note * Quoted by me in 1851, in my sixteenth letter on Glaciers.

page 105 note * “I incline to think that water, in these circumstances, may, though surrounded by ice, have a fixed temperature somewhat higher than what is called 32°. But I have not yet had an opportunity of verifying the conjecture.

“[My idea is that the invasion of cold from the surrounding ice is spent in producing a very gradual “regelation” in the water which touches the ice, leaving the interior water in possession of its full dose of latent heat, and also of a temperature which may slightly exceed 32°. By similar reasoning, a small body of ice, inclosed in a large mass of water, will preserve its proper internal temperature below 32°; but, instead of regelation taking place, the surface is being gradually thawed. This is the case contemplated in the paragraph of the text to which this note refers.]”

N.B.—The words in brackets were added to this note during printing. 13th May 1858.