Experiments on the Gas from Coal. 429 
Measures Take Give Diminished 
of Oxyg. Carb. Acid. by firing. 
2 Carb. hydr....4.......... ee selectins ae)s/> aay 4 
2 Carb. oxide... .2. ..-+-a0- Bas Sep eageet Coe: 2 
TL SMANOROSEN <6 cinkSsdeleiniaicina y <\nisi¢iecieapc's cu 223 
19 13} + 283 
In this instance the hypothetical constitu- 
tion coincides even more nearly with the 
facts, than in the former case. It must in- 
deed, be acknowledged that the explanation 
rests on hypothesis only ; but it is on an hy- 
pothesis, which is perfectly consistent witha 
copious and increasing induction of facts, all 
tending to establish a limitation to the pro- 
portions in which bodies combine; while the 
opposite explanation is at variance with this 
general law of chemical union. 
