TESTS OHIO. 
CHEMICAL ANALYSES. 
145 
Laboratory number. 
Air-drying loss 
Moisture 
Volatile matter. 
Fixed carbon. . . 
(Ash 
(Sulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calorific value determined: 
Calories 
British thermal units. 
Mine samples. 
1900 
6.60 
10.78 
34.86 
48. 23 
6.13 
1.11 
6,663 
11,993 
1901 
5. 20 
35. 74 
48. 46 
6.01 
1.43 
Car 
sample 
2144 
3.90 
9.90 
33.66 
44.86 
11.58 
1.81 
5.28 
63.06 
1.23 
17.04 
6,265 
11, 77 
STEAMING TEST. 
Test 203, Ohio No. 3, washed. 
Size as shipped, run of mine. Size as used, over 1 inch, 36.2 per cent; J inch to 1 inch, 23.8 per cent; ^ 
inch to i inch, 17.5 per cent; under i inch, 22.5 per cent. Duration of test, 9.78 hours. Kind of grate, 
rocking. 
MISCELLANEOUS ITEMS. 
Heating value of coal B. T. U. per pound dry coal. 
Force of draft: 
Under stack damper inch water 
Above fire do . . 
Furnace temperature °F 
Dry coal used per square, foot of grate surface per hour pounds 
Equivalent water evaporated per square foot of water-heating surface per hour do.. 
i Percentage of rated horsepower of boiler developed 
I Water apparently evaporated per pound of coal as fired pounds 
I Water evaporated from and at 212° F: 
Per pound of coal as fi red do . . 
Per pound of dry coal do.. 
Per pound of combustible do. . 
Efficiency of boiler, including grate per cent 
Coal as fired: 
Per indicated horsepower hour .pounds 
Per electrical horsepower hour do. . 
Dry coal: 
Per indicated horsepower hour do. . 
Per electrical horsepower hour do. . 
Test 203. 
0.47 
.12 
2,434 
23. 30 
3. 75 
105. 
6.95 
8.17 
8.97 
10. 01 
65. 11 
3. 46 
4.27 
3.15 
3.89 
Bull. 290—06- 
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