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.

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    Appearance near the South Pole; which feems to be one of the Wonders, or Myfte- nes of Nature, lying without the Reach of human Imagination to form any rational, or even probable Conjecture about it ) and ictinn back to what bears a more immediate Relation to this Subjecl. 2. 1 hh A mofp here being (as we have remark’d above)'of fo great Depth and Extent, and refting with its whole incum¬ bent Weight upon theSurface of the Earth the general Preffure refulting from it, muft be, Sreat Proportion. Let us fuppofe a cubical Foot of Water, taking it at the ,oweP, to weigh 63 (tho* feme of our hngiijh Authors have rated it at j6) Pounds • and that the Weight of tire Ar, as is evi¬ dent in a Pump, ordinarily fupports a Co¬ lumn of Water 33 Feet in Height. From thence it will follow, that the general Pref- lure of the Atmcjphere, is equal to that of an Ocean ofWater furrounding the Globe 33 Feet in Depth. And confeqtiently that the Amofphere impendent over England ( computing it in fuperlicial meafure to he 39 Millions of Acres) amounts to more | *1—>»* V 1 h O h < t T T 1 1 ^ - ... than Fifteen Hundred 1 houfand Mill of ] uns Weight, vt 1 uns. iiiiions ^N D fince it is the Property of all Fluids, to raife and buoy up, all luch Bo¬ dies, which, Bulk for Bulk, are lighter than themfelves, lighter than the Medium in which