174 _ REPORT—1845. 
A. Estimation of olefiant and carbonic acid gases. 
_ | Volume. | Pressure. Temp. |lm,.ato°C. 
GanOKBdS.).cceuvysssdsanineiinstss kuru o 1418 | 06562 | 10-9 89-48 
After absorption of olefiant gas .........+4 141:8 | 0:6562 10:9 89:48 
After absorption of carbonic acid.,.......++ 1283 | 0:6523 11:0 80:46 
B. Examination of the gases freed from olefiant gas and carbonic acid. 
GAS TISEC..cscpubsh-vecssescenonsserspsocrnnaperss: 139°7 | 0:4792 11-0 64:36 
After admission Of O,,...-...,.seeeeenenereeees 207°9 | 0:5479 11:0 109:50 
After COMbUStION ......c0c...csseersseeeenevers 181-6 | 05215 11:0 91:05 
After absorption Of CO. .,.....ssseeseeeseeee 1481 | 05011 11-0 71:35 
After admission Of H............ccsseeeeeeeeees 2863 | 0:6267 11-2 172:36 
After combustion ...... Tae Pete eda cat COne 1646 | 0:5075 115 80:16 
Nitrppén” 2 5. ee we te SBOE 
CHMIC OCI acs te gs NOE 
Carbonie oxidg . . 9. °. ss 25°10 
Light carburetted hydrogen. . 2°33 
Hydrogen. . . - . » » » 6°66 
100°00 
The gas which we collected within two feet nine inches of the tuyére, pos- 
sesses such a remarkable composition that we are obliged to devote to it par- 
ticular attention. The gases, although collected only two feet nine inches 
above the entrance of air, are entirely free from oxygen, and, what is still more 
remarkable, do not contain a trace of carbonic acid. Olefiant gas and light 
carburetted hydrogen could not be present, as the gases produced in the re- 
gion of the furnace are evolved from materials long exposed to a white heat. 
Cyanogen, however, was found in the gaseous mixture in such quantity as 
to be quite sensible by its smell, and by giving the flame its characteristic 
purple colour. 
The analysis of the mixture was effected in the same manner as in the 
preceding cases, but it is necessary to use the following equations in the 
calculation of its composition. ‘ 
We call the quantity of gas used in the analysis A, the quantity of its 
constituents hydrogen, carbonic oxide, cyanogen, and nitrogen, respectively 
2, y, z,; and designate the oxygen used in tle combustion as O, and that 
remaining after combustion as p, and the volumes of gas remaining after the 
combustion, and then after the absorption of the carbonic acid, as B and C ; 
we then obtain the following expressions :— 
A=atyt+2t+n%. 
B=Oj+nt+te+4y—32. 
C=O+n—2-—4y— $2. 
O —p=t2e+ty4+ 22. 
The values of the unknown quantities deduced from these equations are— 
C—p+A), 
$20-—B + Eee 
A—3C 
yoo. cESD) 
MUTA wii eit 
3C—p+A-—20. 
eda rrr WMT VOLT 
