Identifier: vegetablestatick00hale (find matches)
Title: Vegetable staticks, or, An account of some statical experiments on the sap in vegetables : being an essay towards a natural history of vegetation : Also, a specimen of an attempt to analyse the air, by a great variety of chymio-statical experiments, which were read at several meetings before the Royal Society
Year: 1727 (1720s)
Authors: Hales, Stephen, 1677-1761 Gribelin, Simon, 1661 or 2-1733, engraver Royal Society (Great Britain) Burndy Library, donor. DSI
Subjects: Plant physiology Air
Publisher: London : Printed for W. and J. Innys ... and T. Woodward ...
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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afunder the ftrongeft bombs or cannon, andwhirl fortifications into the air. This fort of mercurial gage, made ufe ofin Experiment §9, with fome unftuous mat-ter, as Honey, Treacle, or the like, on theMercury in the tube, to note how high itrifes there, might probably be of fervice,in finding out unfathomable depths of theSea, vis& by fixing this fea-gage to fomebuoyant body which fhould be funk by aweight fixt to it, which weight might byan eafie contrivance be detached from thebuoyant body, as foon as it touched the bot-tom of the Tea,- fo that the buoyant bodyand gage would immediately afcend to thefurface of the water 5 the buoyant bodyought to be pretty large, and much lighterthan the water, that by its greater eminenceabove the water it might the better be feen.;Por tis probable that from great depths itmay rife at a confiderable diftance from the(hip, tho in a calm. Tor greater accuracy it will be needful,fir ft to try this fea-gage, at fcveral different depths
Text Appearing After Image:
Analyfis of the Air. ioy depths, down to the greateft depth that aline will reach, thereby to difcover, whe-ther or how much the fpring of the air isdifturbed or condenfed, not only by thegreat preffure of the incumbent water, butalfo by its coldnefs at great depths j and inwhat proportion, at different known depthsand in different lengths of time , that an al-lowance may accordingly be made for itat unfathomable depths. This gage will alfo readily fhew the de-grees of compreffion in the condenfing en- gine. But to return to the fubject of the two laftExperiments, which prove the elasticity ofthis new generated air $ which elafticity isfuppofed to confift in the active aerial par-ticles repelling each other with a force*which is reciprocally proportional to theirdiftances. That illuftrious Philofopher, SirIfaac Newton, in accounting how air andvapour is produced, Opticks (guer. 31. fays, The particles when they are fliaken off from bodies by heat or fermentation fo foon as they are be

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