er40 Mr. CAVENDIsH’s Experiments on Air. 
-was expected to become more acid ag in as as: ibis wees] 
‘to be the cafe.: 
In the firft of thefe two experiments, an: ose! fe io air 
to be exploded fhould be as: freeas poffible from common air, 
the globe was firft filled with a mixture of dephlogifticated and. 
43nflammable Jair, it was then exhaufted, and the air to be ex-- 
‘ploded let in3° by which meatis,.:though the globe was not per= 
fetly.sexhaufted, very ‘little common air could be: left in it 
In: the firft fet of experiments: this circumftance: was not 
attended to, andthe purity of the eee ain was. 
“peg to be examined in both fets. . : uO? 
»iFrom what has been faid there: feems the vicnihl raiteaoe to 
hire that dephlogifticated air is>only water deprived of its 
phlogifton, and that inflammable air, as was before faid) is. 
either phlogifticated water, orvelfe isi phingees but in i 
probability the former. ft 
oAs Mr. Watt, in a RE ‘eal bétomeyiife ese. 
fuppofes water to confift-of dephlogifticated air and phlogifton 
deprived of part of their latent heat, whereas. I take: no notice 
of the latter circumftance, it may be proper to mention in a 
few words the:reafon of this apparent difference betwen us. If 
there be any fuch thing as elementary heat, it muft be allowed 
that what Mr. Wart faysis true; but by the fame rule we 
ought to fay, that the diluted mineral acids confift of the con= 
centrated acids united to water and deprived of part of their 
latent heat; that folutions of fal ammoniac, and moft other 
other neutral falts, confift of the falt united to water and ele- 
mentary heat; and a fimilar language ought to be ufed im 
fpeaking of almoft all chemical combinations, as there are very 
few: which are not attended with fome increafe or diminution 
of heat, Now IJ have chofen to avoid this form of {peaking, 
both 
