Mathematics – Logic
Scientific paper
Jul 1872
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1872natur...6..200h&link_type=abstract
Nature, Volume 6, Issue 141, pp. 200 (1872).
Mathematics
Logic
Scientific paper
I WAS glad to see the powerful argument in favour of the solidity of the earth which Sir William Thomson has deduced from its great rigidity, republished in NATURE of January 18, since, though never attacked, it has been ignored by those who hold a contrary view. In a lecture before the Royal Institution in May 1867, I appealed to it in support of the notion which I have long maintained of a globe solidified from the centre ; and I remember that for that and for other heresies in my lecture I was sharply attacked in the Geological Magazine, and in turn defended myself as best I might in the same magazine for February 1868. I there said that ''the conclusions of Hopkins from the phenomena of precession and nutation, the investigations of Archdeacon Pratt on the crushing effect of immense mountain masses like the Himalaya, and the deductions of Sir William Thomson from the phenomena of the tides, showing the great rigidity of the earth, are so many concurrent evidences that our planet, if not actually solid to the centre, has a crust far thicker than can be accounted for by the theory of a liquid globe, covered only with a crust resulting from superficial cooling.'' This discussion of the subject at that time seems to have had the effect of bringing to the front the defenders of the latter theory, which, in the papular mind at least, has a mythological rather than a scientific foundation. It was, therefore, well that Sir William Thomson should repeat his arguments.
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