264 On the Gaseous Combinations of 
but had been often opened, and portions of it used during 
the interval. The bottle was now half-full of water. The 
purity of this gas was tried just at the time of making the 
following experiments, by exposing it to hydroguretted 
sulphuret of lime in the usual way. The nitrous gas em-~ 
ployed contained, by the test of sulphate of iron, 11°5 per 
cent. of azote. The inflammable gas had been freed from 
carbonic acid, but it contained 13°5 per cent. of common air. 
So Ge . 1s ; er 4F = 7 oe 
c A S y= 
Ae mone Cc 
Pee pee sS. ae Se eee 
2 & @ boi Sie § 25/2 o Ole Siw a8. s 
On s/\3 DSBs eiPsBlesisegs 
SERS Sms SSeS Raum eas 
1| 25 22. | 24 9 
a d Sia PS ee 
2\, 25 40 30 pied 
Scud : +3 xe 7 
31.20 Does not burn. 
le HG} 88 42 18 
ee 25 50 31 | 8:5 Bo 0 eS a 10 
* 
6} -40' 4 35 Does not burn. | 
7| 40 40 | Burns. | 
From this table, and our knowledge of the constituents 
of the gases used, it is easy to deduce the following : 
GASES EXAMINED. as ComPosITION OF 
Pure in- ely ge s ResIDuE, 
O12 )/31¢95 
flamma-| 2 8) SiS (Be) BZ i. = 
\ Se tS Clg o ; 
bie gas. | < 3 i H bs 2. Azote, Oxygen, 
Si, ae Cis, 5 z 
a] 216 | 447/ 87175] 22) 9 | 87 | 08 
onion _ TU ——>—|—_—_ | oo—— 
o| 21-6 | 53-5 9'9| 85 | 23 17 | 9°90 | 71 
3} 173 | 48°9| 8:8! 75 | - 
4) 216 | 491! 93) 80| 6 138] 93 | 29 
—|\— | Teale os 
5| 216 | 44:7) 87] 75 |29°5| 85] 8-7 | 0 
6} 34:6 | 31°90} 85] 75 | 
71.34:6 | 36°3| 9°1| So | 
