136 Mr. Kir wan’s Experiments 
that in which a candle burns naturally ; and that it is by no 
means dephlogifticated. 
Laftly, Alkaline and hepatic airs, perfectly pure and mixed 
in proper proportions, would probably deftroy each other com- 
pletely, though I have not been able to effedt this intirely. 
Six meafures of hepatic air from liver of fulphur and 6 of alka-? 
line air immediately throw up a white cloud, leave a whitifh 
feu m .011 the fides of the jar, and are reduced to about 1 mea- 
fure. On adding water this is reduced to about one-half ; and 
in this I found a candle to burn naturally : but the following 
experiments, being made with more care, prove that this refi- 
duar-y air was only the common air of the veffels. 
To 6 cubic inches of calcareous hepatic air I admitted, all at 
once, 7 of alkaline air ; a white cloud and a little white feum 
at firft appeared ,; but in a few feconds the whole was reduced 
to fix’fevenths of a cubic inch *, and on adding 2 meafures of 
water, only one-ninth of a cubic inch of air remained. This 
could not be inflamed* The water, thus impregnated, preci- 
pitated a folution of filver black. In this experiment great 
care was taken to have each of the mixed airs as pure as poffi- 
ble, and the alkaline was admitted all at once, inftead of by 
different portions, merely with that view ; and it is probable, 
that, if the due proportion were hit upon, nothing would 
remain. The feum appears to be almoft liquid, and as foon 
as the jar is emptied of mercury, it breaks out into a white 
fmoke, with an exceeding fharp urinous fmell. 
Five meafures of martial hepatic air were, upon the admiffion 
of 5 1 of alkaline air, reduced to fomething more than one mea- 
fure, and upon the addition of water there remained but half a 
meafure ; and this was inflammable, with detonation ; the 
inflammable 
