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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he fide of a large woodenfoffet ab, (Fig. 39.) and glewed into it thegreat end of another foffet ii, covering theorifice with a bladder valve r: Then I fit-ted a valve b i, to the orifice of the ironfyphon f f> fixing the end of the fyphonfafl: at b into the foffet a b: Then by meansof narrow hoops I placed four Diaphragmsof flannel at half an inch diftance from eachother, into the broad rim of a fieve, whichwas about 7 inches diameter. The fieve wasfixed to, and had a free communication withboth orifices of the fyphon, by means oftwo large bladders i in no. The inftrument being thusprepared, pinch-ing my noftrils clofe, when I drew in breathwith my mouth at ay the valve i b beingthereby lifted up, the air paffed freely thro*he fyphon from the bladders, which thenfubfided, andflirunk confiderably : But whenI breathed air out of my lungs, then thevalve t b clofing the orifice of the fyphon, theair paffed thro1 the valve r into the blad-ders? and thereby dilated them j by which arti-
Text Appearing After Image:
Analyfts of the Air. 16$ artifice the air which I expired muft necef-farily pafs thro all the Diaphragms, beforeit could be infpired into my lungs again.The whole capacity of the bladders and fy-phon was 4 or 5 quarts. Common fea fait, and Sal Tartar, beingflrong imbibers of fulphureous fleams, I dip-ped the four Diaphragms in ftrong folu-tions of thofe falts, as alfo in white winevinegar, which is looked upon as a goodanti-peftilential: Taking care after each ofthefe Experiments to cleanfe the fyphonand bladder well from the foul air, by fil-ling them with water. I could breath\oo and fro the air inclofcdin this inftrument for a minute and half,when there wore no Diaphragms in kj whenthe 4 Diaphragms were dipped in vinegar,3 minutes; wher^dipped in a flrong folutionof fea fait, 3 minutes and an half. In a Lixi-vium of Sal Tartar, 3 minutes 3 when theDiaphragms were dipped in the like Lixi-vium, and then well dryed, 5 minutes; andonc(e 8 -(- ~ minutes, with very highly cal-cined Sal T

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