the heavy inflammable Air . 6 s 
experiments 4,44 meafures of fixed air were produced from 
5,58 of the heavy inflammable; the remaining 1,18 mufthave 
been chiefly phlogifticated air. 
Exp. 7. Inflammable air 2| and dephlogifticated air 4,^8 
were inflamed in the fmall tube. They then meafured 4J, and 
were reduced by lime water to 24*. After feveral bubbles of 
nitrous air, the refidue was lefs than 2 by nearly J. 
In this experiment 2,09 meafures of fixed air were produced. 
Exp. 8 . In a large exploding jar, 24- meafures of inflamma- 
ble air, and 4, 17 of dephlogifticated air, were reduced by corn- 
bullion to 4,1 nearly, and then by lime water to 1,75. About 
a meafure of nitrous air being then thrown up, the refiduary 
air meafured 1,5. 
The quantity of fixed air produced in this inftance is 2,35. 
Exp. 9. Inflammable air 24. meafures were expanded by about 
200 eledlrical fhocks to 5 and not quite 4 - more. To the air thus 
expanded, I added as much dephlogifticated air as increafed the 
column of air to 9J ; thus the dephlogifticated air was rather 
more than 4,09. After combuftion, they meafured fully 4 ; 
and, after being expofed to lime-water, rather lefs than 2.. 
Nitrous air occafioned a fmall contraction further. , 
According to the proportion ftated in p. 56. 2-^meafures of this 
inflammable air contain 0,58 of phlogifticated air ; 0,58 added to 
2, which went to form fixed air, amount to 2,58. But the origi- 
nal quantity of inflammable air, viz . exceeds 2,58 by 0,2^. 
What becomes of the 0,25 mealures of inflammable air which, 
thus difappear ? I apprehend they muft have undergone a 
decompofition, and have been expanded to 10 times their ori- 
ginal bulk. 
The dephlogifticated air was ftill further increafed in the 
following experiment. 
