Quantity of Gases absorbed by Water, he. 35 
In fixing the proportion of carbonic acid absorbed, it is there- 
fore necessary to note the quantity of residuum, as is done in 
the following table. 
Experiment. 
Tempera- 
ture. 
Measures of 
water. 
Measures of 
gas. 
Quantity 
absorbed. 
Residue. 
Absorbed by 
roo inches 
of water. 
1 
55 
13 
32 
14 
l8 
108 
2 
8 5 
13 
32 
11 
21 
84 
3 
55 
13 
24 
1 4 
IO 
108 
4 
55 
10 
1 5 
10 
5 
IOO 
5 
55 
20 
20 
18 
2 
90 
6 
55 
19 
19 
1 6 
3 
84 
7 
8 5 
19 
19 
'3 
6 
70 
8 
110 
IO 
20 
6 
14 
60 
9 
110 
20 
20 
9 
11 
4 5 
Since the above table was drawn up, I have been gratified by 
remarking that, in the experiments of Mr. Cavendish, similar 
variations in the quantities absorbed, were produced by the 
variable, amount of the residua ; as will appear from the follow- 
ing deductions from his experiments. 
At the temperature of 55 0 . 
1 . When the gas absorbed was to the residue as 100 to 164, 
100 cubical inches of water took up - - 116 
2. When the absorbed gas was to the residue as 100 to 16, 
100 inches of water took up - - - 107 
3. The absorbed gas being to the residue as too to 10, 
1 00 parts of water absorbed - - 102^ 
4. The absorption being to the residue as 100 to 
100 parts of water took up - - 95X 
The quality of the residuum, I only ascertained in experi- 
ments 5 and 6 of the preceding table. In experiment 5, the 
residuary two measures contained 7J per cent, of common air, 
F 2 
