TESTS rN DIANA. 
CHEMICAL ANALYSES. 
103 
Mine samples. 
Car 
sample. 
1772 
7.20 
10. 45 
38. 62 
41.35 
9. 58 
4.04 
1770 
4.70 
9. 22 
37. 76 
41.85 
11.17 
3.94 
J 875 
10 SO 
Volatile matter 
36 09 
40 49 
JAsh 
12 62 
4 39 
Hydrogen 
5.46 
I Carbon 
60.88 
1. 13 
xygen 
15. 52 
alorific value determined : 
Calories .' 
6,525 
11,745 
6,214 
11,185 
British thermal units 
STEAMING TESTS. 
Test 157, Indiana No. 6. 
Size as shipped, run of mine. Size as used, over 
inch. 29.9 per cent; \ inch to 1 inch, 19.9 per cent ; 
inch to J inch, 14.2 percent; under \ inch, 36 per 
nt. Duration of test, 9.97 hours. Kind of 
rate, plain. 
Test 159, Indiana No. 6, washed. 
Size as shipped, run of mine. Size as used, over 
1 inch, 39. s per cent; \ inch to 1 inch, 27.1 per cent; 
i inch to i inch, 15.8 per cent; under \ inch, 17.3 per 
cent. Duration of test, 9.92 hours. Kind of grate, 
plain. 
MISCELLANEOUS ITEMS. 
eating value of coal B. T. U. per pound dry coal. 
orce of draft: 
Under stack damper inch water. 
Above fire do. . . 
urnace temperature °F. 
ry coal used per square foot of grate surface per hour pounds. 
quivalent water evaporated per square foot of water-heating surface per hour, 
pounds 
ercentage of rated horsepower of boiler developed 
r ater apparently evaporated per pound of coal as fired pounds. 
r ater evaporated from and at 212° F.: 
Per pound of coal as fired do. . . 
Per pound of dry coal do . . . 
Per pound of combustible do. . . 
fnciency of boiler, including grate per cent. 
)al as fired: 
Per indicated horsepower hour pounds. 
Per electrical horsepower hour do. . . 
ry coal: 
Per indicated horsepower hour. do . . . 
Per electrical horsepower hour do. . . 
Test 157. 
Test 159. 
0.49 
0.43 
.15 
.11 
2,410 
2,522 
18.59 
2.1.40 
3.03 
3.45 
84.9 
9(1. 7 
6.30 
6.15 
7.30 
7.15 
8.16 
8.06 
9.72 
9.18 
63.02 
59. 46 
3.87 
3.96 
4.78 
4.88 
3.47 
3.51 
4.28 
4.33 
