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
Catalogue details

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.

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    known or determined degrees of heat. And To thev couW not be compared one with another; nor could the obfervations made by different per- fons, and tn different parts of the world, be col- lated with any degree of certainty or juftnefs By ■which means, notwithftanding all the very- nume- rous regifters of the weather that have been kept and publifhed by different authors, we are ftill zt a lofs to- determine the comparative differences of' heat and cold in different countries and climatesy and the refult of many other obfervations. 4. Had all the Weather-glafles in the world been made according to one determined fcale, thefein- ccnvenicncies and uncertainties would have been prevented; which are now unavoidable, and muff dill continue fo, until every body agree to gradu-- ate their Thermometers in the fame way, or at lead determine fome fixed or unalterable points of heat, to which all the different fcalcs of thofe in* llruments may be reduced. 5. The great and truly honourable Mr. Boyle*' found himfelf very much at a lofs for a ftandardj whereby to meafure heat and cold : the common inftrumentsfhewinghim no more than the relative coldnefs or heat of things, but leaving him in the dark as to their pofitive degrees. Whence he could not communicate the idea of any fuch degree to * Exp. on Cold, Abr. I. p. 579. another