Analyfis of the Ah. \6^ 



coveries, found that a good quantity of Air 

 was producible from Vegetables, by putting 

 Grapes, Plums, Gooseberries, Cherries, Peas, 

 and feveral other forts of fruits and grains 

 into exhaufted and un exhaufted receivers, 

 where they continued for feveral days emit- 

 ting great quantities of Air. 



Being defirous to make fome further re- 

 iearches into this matter, and to find what 

 proportion of this Air I could obtain out 

 of the different (ubftances in which it was 

 lodged and incorporated, I made the fol- 

 lowing chymio-ftatical Experiments : For, 

 as whatever advance has here been made in 

 the knowledge of the nature of Vegetables, 

 has been owing to ftatical Experiments, fo, 

 lince nature, in all her operations, acts con- 

 formably to thofe mechanick laws, which 

 were eftablifhed at her firft institution 5 it 

 is therefore reafonable to conclude, that the 

 likelieft way to inquire, by chymical ope- 

 rations, into the nature cf a fluid, too fine 

 to be the object of our fight, muft be by 

 rinding out fome means to eftimate what 

 influence the ufual methods of analyfing 

 the animal, vegetable, and mineral king- 

 doms, has on that fubtle fluid ; and this I 

 eftecTted by affixing to retorts and boltheads 



M 2 hydro- 



