Essays and observations on the construction and graduation of thermometers, and on the heating and cooling of bodies / By George Martine, M.D.

  • Martine, George, 1702-1741.
Date:
1787
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Licence: Public Domain Mark

Credit: Essays and observations on the construction and graduation of thermometers, and on the heating and cooling of bodies / By George Martine, M.D. Source: Wellcome Collection.

    173/192 (page 163)
    i6y VU, Of the melting and Jin ning Heats of Metals and Minerals. And now are wc come to confider thofe, which of all terreftrial bodies, except elementary earth itl'elf, are the moll: conliflent and firm, and moflr fufceptible of the greatell heats; I mean metals and mineral fubflances. Ihey are naturally in a conlillent form : but Tome of them flow at a mo- derate enough fire; while others require fo intenfe a heat to diflblve them, that we find it diflicuk how to bring it to a calcul. $ fhfichflver is always reckoned in the clafs of metals. But it is lo far from the common con- fiftent for n and appearance of other metals, that it may juflly be looked on as the trueft, vifible, and tangible fluid in the world. By fome flight additions it may indeed be robbed of that proper- ty. But when left to itfclf pure and unmixed, it ahvays prcferves its fluidity in the very greateft colds natural or artificial that have ever been ob- lerved *. * Sec Boyle Exp. on Cold, Abr. I. p. 597. Boerh. Chem. I. p. 36, 165, De Maupert. Fig. de la Terre, p. 58. Of