ON THE GASES EVOLVED FROM IRON FURNACES, 167 
end of the tube, so that the products of distillation might have to traverse 
the red-hot coals, and thus suffer a similar process of decomposition to that 
which they experience in iron furnaces. The ammonia in this experiment 
was collected in a Liebig’s condenser filled with muriatic acid, and the 
gases were detained in a gasometer filled with boiled water. The determi- 
nation of the other data necessary for the calculation was done as in the pre- 
vious experiments, and the following results were obtained :— 
Weight of the coal used . « . 1 6 6 ee 6 ee + © 204550 
o coke remaining . . » « + » 13°6568 
m liquid and gaseous products of distillation - - 6°7982 
is liquid products alone . . . - + + 85389 
‘i chloride of platinum and ammonium obtained . 0°7681 
3 sulphuretted hydrogen and carbonic acid . . 0°5159 
rr sulphuret of lead . . . «1. we © «© « 02500 
gases evolved . . « 9 9) a'2593 
The quantity of gas collected had the following composition : _ 
In First Eudiometer. 
Volume. Pressure. Temp. 1m. at 0° C, 
Original volume .......sssevsessenesseeeescees 1162 | 06321 | 11-0 7061 
After absorption Of HC ........ccseeeeseneee 111-9 0°6294 10:8 67:75 
In Second Eudiometer. 
Original volume ...scscssseeseccevensceenenses ; 0:4441 111 46:35 
After admission of O oF 0°6152 11:0 166°84 
After explosion ........++« 0-5308 111 98°86 
After absorption of CO, 0-5040 10-4 77:30 
After admission of H .. va 0:7080 11-1 26092 
After Explosion .........sseseocsscscsscsosccsces y 0°4201 113 30°42 
Hydrogen . . ¢ oe 2) 1132 
Light carburetted hydrogen - » 28°28 
Carbonic oxide. . Hed oti 1GBS 
Olefiant' gas. 6 fe 8 se ey 408 
100°00 
The 3°259 grms. of the gases obtained by distillation must therefore be 
composed as follows :— 
Hydrogen . . - « = 0298 
Light carburetted hydrogen Pinas deta 1 UF 
Carbonic oxide. . See Aeeay 
Olefiantmasist 25 827 
3°259 
100 parts of the coal distilled in this way gave— 
COKE cach ebe ead sis anteOOy ven «Ol. Lae 
Tar and water . . - . 3480 . . 16°594 
Light carburetted hydrogen pga ha, ss (hao 
Carbonic oxide . . . Pies leis a Ooee 
Carbonic acid . ..... . O480 . . 2289 
Olefiant gas . . ae duttevih. | Ue ti sats ako 
Sulphuretted hydrogen Radial \ ace Uaeh Wien’ «OU Te 
FAVUFOC EDs. sean ages ae, OES, vos, Laat 
EET TUE amen RY RR te RE ARS 8 069 1 Ai aa Uo 
20°971 100:000 
