^3 Dr. Austin’s Experiments on 
proportion the dephlogifticated sir is Sufficient to Saturate this 
inflammable air, and what quantity of fixed air they produce 
when inflamed. 
Exp. 3. In a large exploding jar I mixed 4 1 meafures of 
heavy inflammable air with 7* of dephlogifticated air. After 
explofion thefe airs meafured Something more than 6£, and were 
reduced by lime water to rather leSs than 2f. In this reti- 
duary air a candle burnt with an increafed flame, as in dephlo- 
gifticated air. 
Thus very nearly 4 meafures of fixed air were produced from 
4! of heavy inflammable air. 
Exp. 4. Into the Small bent tube, which was employed in 
the firft and fecond experiments, I introduced 3$ meafures of 
inflammable air, and 5I of dephlogifticated air. Theie were 
reduced by inflammation to 5}, and by lime water to 2}. 
In this experiment, 3 meafures of fixed air were produced 
from 3! of inflammable air. 
In the third experiment, the quantity of fixed air produced is 
4 meafures very nearly. The refiduary air is rather lets than 
if to 2 2 we add a quantity of inflammable air equal to the bulk 
of fixed air, that is, very nearly 4 meafures, it will amount to 6 f 
full meafure ; and if we further add 5,6, which is the quantity 
of dephlogifticated air necefl'ary to form 4 meafures of fixed air, 
we fhall have 11,93, which is within feven hundredths of a 
meafure of the original quantity of the two airs. 
In the fourth experiment, 3 meafures of fixed air are pro- 
duced, which require 3 of inflammable air, and 4,2 of dephlo- 
gifticated air; thefe, added to the 2j meafures of refiduary air 
amount to 9,53, which is two-tenths of a meafure more than 
the original quantity. 
It 
