106 PRELIMINAEY REPORT ON COAL-TESTING PLANT, [bull. 261. 
thirty hours' continuous run the bed was in good condition, and the 
test could have been continued or a new run begun without renewing 
the producer bed. 
During the test the engine carried only two thirds of its normal 
load, but there seems to be no doubt that it could have carried full 
load throughout the entire run. 
COAL, TEXAS NO. 1; PRODUCER-GAS TEST NO. 11* 
[Coal from the mine of the Houston County Coal and Manufacturing Company, near Crockett, Tex.; I 
tested November 21, 22, 1904.] 
Duration of test hours. . 21. 67 
Total coal consumed in producer pounds. . 12, 800 
Moisture in coal per cent. . 33. 501 
Dry coal consumed in producer pounds. . 8, 510 
Refuse from dry coal .per cent. . 15. 851 
Total refuse from coal pounds. . 1, 327 
Total combustible consumed in producer do 7, 183 
Coal consumed, pounds per hour. 
Coal consumed in producer 590 
Dry coal consumed in producer 393 
Combustible consumed in producer 332 
Equivalent coal used by producer plant 660 
Equivalent dry coal used by producer plant 439. 5 I 
Equivalent combustible used by producer plant 371. 3 1 
British thermal units. 
Per pound of coal as fired 7, 267 
Per pound of dry coal 10, 928 
Per pound of combustible - 12, 945 
Per cubic foot of standard gas 169. 7 I 
From standard gas per pound dry coal burned in producer 7, 260 
From standard gas per hour per brake horsepower 12, 230 
Gas produced, cubic feet {reduced to standard). 
Total 363, 654 
Per hour 16, 800 j 
Per pound coal consumed in producer 28. 4 1 
Per pound dry coal consumed in producer 42. 7 1 
Per pound combustible consumed in producer 50. 6 
Per pound equivalent coal used by producer plant 25. 5 . 
Per pound equivalent dry coal used by producer plant 38. 2 
Per pound equivalent combustible used by producer plant 45. 3 
Horsepower developed. 
Average electrical horsepower available for outside purposes 187 
Average electrical horsepower developed at switch board 198 
Average brake horsepower f available for outside purposes 220 
Average brake horsepower t developed at engine 233 
* Gas-producer hopper leaked. 
f Based on an assumed efficiency of 85 per cent for generator and belt. 
