File: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, (14781952332).jpg

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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Text Appearing Before Image:
e (mall end of the bolthead, I invertedit, and poured in water to z. Then fromanother veffel (in which I had a knownquantity of water by weight) I poured inwater to/ 5 fo the quantity of water whichwas wanting, upon weighing this veffel a-gain, was equal to the bulk of the new ge-nerated Air. I chofe to meafure the quanti-ties of Air, and the matter from whence itarofe, by one common meafure of cubickinches, eftimated from the fpecifick gravi-ties of the feveral fubftances, that therebythe proportion of one to the other mightthe more readily be feen. I made ufe of the following means tomeaiiire the great quantities of Air, whichwere either railed and generated, or abforbedby the fermentation arifing from the mix-ture of variety of folid and fluid fubftan-ces? whereby I could eafily eftimate the fur-prifing effe&s of fermentation on the air, viz.I put into the boithead b (Fig. 34.) theingredients, and then run the long neck ofthe bolthead into the deep cylindrical glafs ay>2 and
Text Appearing After Image:
Anafyfis of the Ait\ 161 and inclined the inverted glafs ay, andbolthead almoft horizontally in a large vef-fel of water, that the water might run in-to the glafs a y 5 when it was almoft up toa the top of the bolthead, I then irnmerfedthe bottom of the bolthead, and lower partv of the cylindrical glafs under water, rai- I at the fame time the end a uppermofhThen before I took them out of the water*I fet the bolthead and lower part of the cy-lindrical glafs a j into the earthen veflel x xfull of water, and having lifted all out ofthe great veifel of water, I marked the fur-face z of the water in the glafs ay. If the ingredients in the bolthead^ uponfermenting generated Air, then the waterwould fall from z to/, and the empty ipacez y was equal to the bulk of the quantityof Air generated: But if the ingredientsupon fermentation did abforbe or fix thea£tive particles of Air, then the furface ofthe water would afcend from z to ny andthe fpace z n> which was filled with water,,was equa

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