An historical and philosophical account of the barometer, or, weather-glass. Wherein the reason and use of that instrument, the theory of the atmosphere, and the causes of its different gravitation, are assign'd and explain'd. And a modest attempt from thence made towards a rational account and probable judgment of the weather / By Edward Saul.

  • Saul, Edward, 1677-1754
Date:
1735
Catalogue details

Licence: Public Domain Mark

Credit: An historical and philosophical account of the barometer, or, weather-glass. Wherein the reason and use of that instrument, the theory of the atmosphere, and the causes of its different gravitation, are assign'd and explain'd. And a modest attempt from thence made towards a rational account and probable judgment of the weather / By Edward Saul. Source: Wellcome Collection.

    95/116 (page 91)
    Csm] to require the mutual and alternate Action and Re-action of both. (As Mr. Derham Phyfico Theology, Note p. 15, 16. in part confirms and obferves.) And agreeably to this Obfervation, the temperate Zones, being, by their Situation, liable to different Degrees and frequent Vi- ciffitudes of Heat and Cold, are, by Expe¬ rience, found to be the chief and only Seat of the variable Winds : Whereas in the torrid and frigid Z,ones, the Degrees of Heat and Gold being more equal, conftant and regular, the Winds blowing within their relpective Limits are fo too. B y the daily Revolution of the Earth upon its own Axis, the Air within the Tro¬ pics palling daily under the meridian Heat of the Sun, is to a great Degree rarefy’d and attenuated by it: In the Confequence of which, the more cool and heavy Air preffing in, to preferve the Balance ; and following the apparent Motion of the Sun towards the Weft, caufes a general Raft Wind to blow round the Globe on each fide of the ALquator ; which, being at all Sea- fons of the Year nearly equal and con¬ ftant, can produce little Alteration, either in the Weight of the Air, or the Rife, or hall, of the Mercury within the Tropics. Th e very fame Effect (of little or no Variation-in the Height of the Mercury) equally follows from the intenfe and fettled M 2 C old n els