IN GASES: HYDROGEN, CARBONIC OXIDE, AND OXYGEN. 
673 
was more than double the oxygen, the coefficient was almost exactly 4 ; when the 
hydrogen was just double the oxygen, the coefficient was slightly lowered, and when 
the hydrogen was less than double the oxygen, the coefficient fell gradually from 
4 to 3 - 6. In the following table the results of these experiments are tabulated, 
together with one or two previous experiments which fit into the series. 
Table XLVI.—Temperature = 90°-.L00°. Pressure = 1000 millims. 
Reference 
No. 
Before the explosion. 
After the explosion. 
Cl. 
Oxygen. 
Carbonic 
oxide. 
Hydrogen. 
Carbonic 
oxide. 
Carbonic 
acid. 
Hydrogen. 
Steam. 
141 
17-2 
18-3 
81-7 
15-8 
2-5 
49-9 
31-8 
3-98 
103 
17-3 
24-0 
76-0 
20-4 
3-5 
44-7 
31-3 
4-03 
142 
16-9 
39-7 
60-3 
33-0 
6-8 
33-2 
27-1 
3-97 
106 
15-4 
51-7 
48-3 
42-9 
8-7 
26-6 
21-8 
4-02 
143 
17-4 
58-8 
41-2 
45-8 
13-0 
19-4 
21-8 
3-97 
144 
17-35 
61-6 
38-4 
47-5 
141 
17-8 
20-6 
3-93 
145 
17-35 
66-0 
34-0 
50-0 
16-0 
15-3 
18-7 
3-81 
98 
17-5 
73-3 
26-7 
53-7 
19-6 
11-4 
15-2 
3-67 
146 
16-7 
79-2 
20-8 
57-9 
21-3 
8-8 
12-05 
3-68 
147 
16-6 
84-3 
15-7 
60-3 
24-0 
6-4 
9-25 
3-61 
Again, similar experiments were made with a smaller proportion of oxygen ; instead 
of 17*4 parts of oxygen 12’4 were taken. With 17’4 parts of oxygen, the percentage 
of hydrogen could not be reduced to 34 per cent, of the combustible gases without 
lowering the coefficient, but with only 12'4 parts of oxygen the lowering of the 
coefficient should only occur when the percentage of hydrogen is reduced to about 
25 per cent. 
The experiments agreed perfectly with the theory. 
With 32 per cent, of hydrogen the coefficient was normal, with 28 per cent, it was 
still nearly normal, with 24 per cent, it had fallen. 
Table XLYII.—Temperature = 90°. Pressure = 1000 millims. 
Reference 
No. 
Before the explosion. 
After the explosion. 
a. 
Oxygen. 
Carbonic 
oxide. 
Hydrogen. 
Carbonic 
oxide. 
Carbonic 
acid. 
Hydrogen. 
Steam. 
148 
12-45 
67-9 
32-1 
56-9 
11-0 
18-2 
13-9 
3-96 
149 
12-45 
72-0 
28-0 
59-6 
12-4 
15-5 
12-5 
3-91 
150 
12-45 
76-1 
23-9 
62-1 
14-0 
12-9 
11-0 
3-77 
The results of these two series of experiments are expressed graphically below. The 
MDCCCLX XXIY. 4 E 
