132 
OPERATIONS OF FUEL-TESTING PLANT IN 1905, 
STEAMING TESTS. 
Test Z'l'i, Maryland No. 1. 
Size as shipped, run of mine. Size as used, over 
1 inch, 5.2 per cent; \ inch to 1 inch, 6.9 per cent; 
\ inch to \ inch, 14.5 per cent; under | inch 73.4 
per cent. Duration of test, 10 hours. Kind of 
grate, plain. 
Test 3:U, Maryland No. I, washed. 
Size as shipped, run of mine. Size as used, over 
1 inch, 17.2 per cent; \ inch to 1 inch. 21.2 per cent ; 
\ inch to \ inch, 22.2 per cent; under \ inch, 30.4 
percent. Duration of test, 9.95 hours. Kind of 
grate, rocking. 
Test 'i.12, Maryland No. 1, washed. 
Size as shipped, run of mine. Size as used, over 
1 inch, 15.7 per cent ; \ inch to 1 inch, 14.7 per cent; 
\ inch to \ inch, 17. 3 per cent; under J inch, 52.3 
percent. Duration of test, 9.97 hours. Kind of 
grate, rocking. 
MISCEI.I.ANF.OIS ITEMS. 
Test 222. Test 231. Test 232. 
Heating value of coal B. T. TJ.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 fool of water-heating surf ace 
per hour pounds 
Percentage of rated horsepower of boiler developed 
Water apparently evaporated per pound of coal as fired pounds 
Water e\ aporated from and at 212° J-".: 
Per pound of coal as tired 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. . 
13,65 
0. 49 
.16 
•_', L29 
15.81 
2.86 
80. 1 
7. 59 
8. 90 
9. 06 
L0.60 
63.96 
:;. is 
3.92 
3. 12 
3.85 
L3,946 
0. 46 
. 11 
2,398 
L9.67 
3. 42 
95. 9 
7.86 
9.34 
9.70 
11. 14 
117. 17 
3.03 
3. 74 
2.91 
3. 60 
ANALYSES. 
Test 222. 
Test 231. 
Test 232. 
Test 222. 
Test 231. 
Tesl 232. 
Proximate. 
Moisture 
1.84 
3. 70 
13.96 
71.63 
10.71 
3.43 
14.08 
72.36 
10.13 
Ultimate. 
77. (it) 
3. 85 
2. 90 
1 . 31 
1 . 55 
12. 76 
79. 52 
3. 95 
2.97 
1 . 36 
1.08 
11.12 
80. 02 
Volatile matter 
Fixed carbon 
14.03 
71.61 
Hydrogen a 
3.97 
3. 01 
Ash 
12. 52 
1.38 
1.14 
100. 00 
1.52 
100. 00 
1.04 
100.00 
1.10 
Sulphur 
Ash 
Ui.48 
100.00 
100.00 
lot). 0C 
a 
Figured fr 
ora car sample. 
