ON THE GASES EVOLVED FROM IRON FURNACES. 171 
A. Estimation of olefiant gas and carbonic acid. 
ee EEE EEUU EEE SEES SERENE? 
Volume. Pressure. Temp. | 1m. ato°C. 
Wet >-asesayyssisc-angananias<testaediens 105-4 | 06254 | 11-0 | 63:36 
After absorption of olefiant gas .....-.++... 1046 0°6248 11:0 62°82 
After absorption of carbonic acid ......... 95°5 06173 101 56°85 
B. Examination of gas freed from olefiant gas and carbonic acid. 
GABURED vo .ccisdssesceesccesecessesestsncesncus 125-4 0°4628 105 55°83 
After admission Of O  .....s.essseeeeeers eevee] 211-9 0°5680 110 115-70 
After Combustion ........sccscssseeeeeeeeeeees 185°5 05221 11:0 93°10 
After absorption Of CO, y.sssseseseessneeeene 155-3 0°5032 10:0 75:39 
After admission Of H  ..sscsssssseecsecueenees 3448 0°6757 105 224°36 
After combustion ....... tt) ee Oe 195:5 0:5342 10:9 100°43 
OL ERO REE RASS I Rane ee Me WS en ee Te 
Mitraren sg RS Oe Sa TT 
Carpenle Aciq- 5. ee BAZ 
Carbonic oxide. . . «+, 2024 
Light carburetted hydrogen oe BBS 
FIQMEOGON ey Jo ie es oe gi Oa 
Olefiant gas. .- . -. ». » - « 0°85 
100:00 
Experiment III. 
The depth of the tube in the furnace was eleven feet, and the gases evolved 
were accompanied by vapour of tar, and possessed the smell of coal-gas. The 
flame was of a clear yellow, with a strong illuminating power. The number 
of charges was twenty-three. 
A. Estimation of carbonic acid and olefiant gas. 
Volume. Pressure. Temp. | 1m.ato°C. 
eee are Ct La eee Tee 1083 | 06377 | 90 66-86 
After absorption of olefiant gas ............ 107°6 0°6357 9-0 66:22 
After absorption of carbonic acid ......... 98:8 0°6274 9-4 59°93 
B. Examination of the gas freed from olefiant gas and carbonic acid. 
Gas sed ..-.,s5c0...eeesenene ts 0°4773 9-4 60°45 
After admission of O ........ 0°5639 9°4 11933 
After CombUStION .......ssseseeereeencneeerees ; 0°5322 9-4 95:90 
After absorption Of CO, ........ssesseseeeee ; 05126 9:3 77-19 
After admission of H_ ........... Brehp oagp veo] 290-2 0:6336 9:3 177°82 
After Combustion .......cssceseeseeseneeneanees 119-9 0-4540 9°5 52-60 
Nittogeicas shen oh se ee re BRST 
Carbonic acid 6.» . 0 6 » 941 
Carbonic oxide. . . « » 23°16 
Light carburetted hydrogen soe ape 
BPpGrO ren MGT at hie as 4 OS 
Oletant eas Tele, HS es Ores 
 - : 100°00 
: Experiment IV. 
The depth of the tube in the furnace was fourteen feet; the number of 
charges twenty-six; the smell of the gases was ammoniacal and tarry ; va- 
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