898 
TABLE IX. 
Actual yield of gas| Actual yield of gas 
Ant. Lap Biv as “per kilo of com- | per kilo of volatile 
P , bustible. combustible. | 1 ories 
Name of gas. — per liter. 
In cubic In cubic In cubic 
In liters. feet. In liters. feet. In liters. feet. 
DALEINCON jucncaee~secenes 365. 955 12,922 | 452, 255 15,97 | 854.380 30. 89 3, 125 
OCW HORS 35S eeces 805, 020 10.770 | 359. 100 12.67 | 697.986 24,65 4, 295 
POOR. s occas caae 320. 648 11.822 | 364.245 12.88 | 782.260 27.60 5, 254 
NONIDS GORE on oe owen ona 267. 570 9.448 | 359, 350 12.69 | 826.088 29.14 4,527 
Zamboanga coal ___------- 802. 305 10,674 | 344.0385 12.15 | 758. 227 26.77 5, 135 
Australian coal -.-.----.-- 227. 845 8.045 | 264, 820 9.39 | 645,270 22.22 5, 616 
The quantity of carbon dioxide in each of the gases is sufficient to 
render it non-luminous. This inert body can easily be removed or 
diminished in quantity in practical work by slaked lime, but no attempt 
was made to do this as it would give a distorted idea of the actual con- 
ditions. As this is the chief noxious body in the gases, perhaps a better 
idea of the relation existing between them can be obtained when they are 
calculated as free from it. 
Tabie X.—Gas free from carbon diowide. 
Yield per kilo |Yield per kilo of} Content of desirable Calorific 
of coal. combustible. constituents. value of 
EE = Calo- | gas a 
Source of coal. _ — ae 
In cu- Ty ca liter. | combus- 
In liters.| bie |Inliters.| bic |C,He,.| CO. | CHy.| He. tible in 
feet. feet. calories. 
P. ct. | P. ct. | Poet. | Pct. 
Batan Island _____- 270.660 | 9.56 | 334.488 | 11.81] 8.12 |19.2 | 22.8 | 47.8 | 4,225 | 1,418, 000 
181) Naat Reet seem 261.097 | 9.22 | 807.390 | 10,84] 6.4 |11.45 | 29.8 | 48.2 | 5,020 | 1,542, 000 
POuless23 sa 245,094 | 10.87 | 388.648 | 11.79 | 8.85 | 9.77 | 85.7 | 44.2 | 5,730 | 1,910, 000 
Newie 2 220.906 | 7.81 | 296.680 | 10.48 | 3.9 | 8.66 | 41.7 | 41.8 | 5,483 | 1, 626, 000 
Zamboanga -_-_--- 271.772 | 9.60 | 309.287 | 10.92 | 6.9 (10.6 | 39.5 | 40.5 | 5,710 | 1,768,000 
AVM T acae kes 215.627 | 7.56 | 248.825 | 8.46] 6.7 | 5.4 | 44.7 | 39.7 | 5,970 | 1,485, 000 
Average of 
Philippine 
coals 21. GAG Bee 4 bac Ay lnncemknt<camce= 
Perhaps the results of the last column of Table X become more intel- 
ligible when attention is called to a piece of research done in 1891 by 
Mahler.*® Commentry coal ** was distilled on a large scale by the Paris 
%° Mahler, Pierre: Compt. rend. Acad. d. sc., Par. (1891), 113, 862. 
* An ultimate analysis published in Handbuch der chemischen Technologie, by 
O. Dammer, 4, 52, shows that Commentry gas coal is of a much better grade 
than the Philippine coals. The analysis of Batan Island coal has been calculated 
ty” a eae 
