The causes of heat and cold : in the several climates and situations of this globe, so far as they depend upon the rays of the sun, considered in order to shew that the difference of heat and cold in other countries may be nearly ascertained by a thermometer as it was read to the Royal Society / by T. Sheldrake.

  • Sheldrake, Timothy, -1770.
Date:
1756
Catalogue details

Licence: Public Domain Mark

Credit: The causes of heat and cold : in the several climates and situations of this globe, so far as they depend upon the rays of the sun, considered in order to shew that the difference of heat and cold in other countries may be nearly ascertained by a thermometer as it was read to the Royal Society / by T. Sheldrake. Source: Wellcome Collection.

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    As we have no certain Rule for determining the Heat, that exotic Plants may require in Sum¬ mer,nor unlefs by dear-bought Experience what Degree of Cold they could with Safety bear in Winter, I was led to confider, whether it might not be poffible to difcover feme Method for de¬ termining how much lefs the Cold of the Win¬ ter in more Southern Climates might be, than in ours, and in what Proportion their Heat alfo might probably exceed that of our Sum¬ mers, by adjufting a Thermometer fo as to afeertain the Difference $ that if it were poffible we might, by the Affiftance of good Green- houfes, Thermometers and Stoves, have the Pleafure of feeing Exotics here in almoft the fame Beauty and Perfection as in their na¬ tive Countries. With this View I attentively and conftantly regarded the Changes of Seafons, and the Rile and Fall of the Spirits in the Thermometer, B 2 knowing