ON THE GASES EVOLVED FROM IRON FURNACES. 
Experiment VI. 
173 
. Depth of the tube twenty feet, thirty-eight charges. The gases were not 
accompanied by vapours of tar, they smelt ammoniacal and burnt with a pale 
blue flame. 
A. Estimation of olefiant gas and carbonic acid. 
Volume. | Pressure. Temp. 1m. ato°c. 
etek: iT ids enna oaestyittl cece 96:2 | 0-7284| 123 | 67-05 
After absorption of olefiant gas ..«.....++s 96-2 | 07274 12-1 67:01 
After absorption of carbonic acid............, 870 | 0-7175 12-2 59°75 
B. Examination of the gas freed from olefiant gas and carbonic acid. 
Gas USCd....ccccerceceseerserenscees Se ebsere ase 113°9 | 0°4586 12:2 50:00 
After admission of O..... 213:0 | 0:5590 12°7 113°78 
After combustion ........ 1928 | 0:5391 12:7 99°32 
After absorption of CO, .. | 169°8 | 0:5285 12-1 85°93 
After admission of H.........cesseeeers | 835°5 | 06777 12:7 117-27 
After COMBUSTION .......ssceererees See eaaecnnie 130:7 | 0:4890 12:2 61-18 
Nitrogen . . . - + + + + 60°46 
Carbonic acid. . . - + + «+ 10°83 
Carbonic oxide -. . - - - - 19°48 
Light carburetted hydrogen. . 4°40 
Hydrogen. . - - + + + + 483 
100°00 
Experiment VII. 
Depth of the tube twenty-three feet, forty-two charges. The gas was 
unaccompanied by tarry vapours, but smelt slightly, although distinetly, of 
eyanogen, and burnt with a pale blue flame of no illuminating power. 
A. Estimation of olefiant and carbonic acid gases. 
Volume. | Pressure. Temp. 1m. at0°C. 
Gage sate. seceesondiass fe ildca essssaeeee| 1216 | 06517] 80 77-02 
After absorption of olefiant gas ....++...++ 121-6 | 0:6517 8:0 77-02 
After absorption of carbonic acid gas ...... 113-0 | 0°6441 8:0 70°71 
B. Examination of the gases freed from olefiant gas and carbonic acid. 
Gas USed.......cescccsseeneeeeeesenens S paetiorae 134-9 | 0:4817 8:0 63:14 
After admission of O.......... pen chicntoscasias’ 2309 | 0:5770 8-0 129°46 
After combustion ....... euidad typ ueue doaehisavs 208°9 | 0:5560 8-0 112-86 
After absorption Of COg «sscccssseseeeseerees 180°1 | 0:5312 73 93°18 
After admission of H...... 0-6720 77 218-03 
After combustion ....... scciss : 0:4730 78 58°75 
Nitrogen - 2 ee + + + + (58°25 
Carbonic acid. . . - +--+ + 819 
Carbonic oxide . . . - + + 26°97 
Light carburetted hydrogen. - 1°64 
Hydrogen. «. - + s+ © + 4°92 
100°00 
Experiment VIII. 
Depth of the tube twenty-four feet; the number of charges and character 
of the gases was the same as in the last experiment. 
