278 Messrs. Allen and Pepys on the 
water, 56 parts were absorbed out of 100. These of course 
were carbonic acid gas ; the test for oxygene absorbed 41, and 
a residuum of 3 was left, which was exactly what we began 
with. This is a striking proof that nothing but carbonic acid 
was produced in the experiment. 
100 : 56 : : 52,03 : 29,13. 
Then 29,13 cubic inches of carbonic acid gas were produced. 
100 : 47,26 : : 29,13 : 13,76. 
These 29,13 cubic inches of carbonic acid gas would therefore 
weigh 13,76 grains. 
The charcoal weighed 4 grains. 
The residual white ash 0,02 
Charcoal consumed 3,98 grains. 
Then if 13,76 grains, the weight of the carbonic acid produced, 
contain 3,98 of charcoal, 100 grains must contain 28, 92. 
13>7 6 : 3’9 8 : : 100 : 28,92. 
Then, according to this experiment, 100 grains of carbonic 
acid gas contain 28,92 charcoal. 
The gas before the experiment consisted of 
Oxygene 50,47 cubic inches. 
Azote 1,56 
52,03 
After the Experiment, 
Carbonic acid 29,13 cubic inches. 
Oxygene 21,34 
Azote - 1,56 
52,03 
