PARK ER 
AND CAMPBELL, 
"bell 8 '] introduction. 15 
draft, for ascertaining the temperatures in the different parts of the 
furnace, and for analyzing the Hue gases. The gas producer and gas 
engine were also provided with apparatus for ascertaining temper- 
atures, for collecting samples of the gas as produced, and for deter 1 
mining the horsepower developed in the gas engine. The electric; 
horsepower developed by both the steam engine and the gas engine 
was ascertained by twenty-minute readings of voltmeters and amme- 
ters, and the electrical horsepower developed per pound of fuel con- 
sumed by the two different methods was thus accurately determined 
and recorded. 
The chemical laboratory was equipped with every necessary appa- 
ratus and chemical material for making proximate and ultimate 
analyses and for determining the calorific value of the coal. The last 
was determined by a Mahler bomb calorimeter, and the observations 
were made in a room especially set aside for this purpose. 
The railroad companies entering St. Louis or having coal resources 
along their lines have cooperated most heartily with the committee in 
charge of the work. 
PERSONNEL. 
The various portions of the plant were put under the direction of 
men thoroughly equipped in their special lines. The steam test divi- 
sion was under the direction of Prof. L. P. Breckenridge, of the Uni- 
versity of Illinois, with Prof. D. T. Randall, of the same university, 
as chief assistant. The gas-producer tests were under the direction of 
Prof. Robert H. Fernald, of Washington University, St. Louis, assisted 
by Capt. John A. Laird, also of St. Louis. The operation of the gas 
producer was directed by Messrs. Charles W. Lummis and C. O. Nor- 
denson, expert engineers, of R. D. Wood & Co., of Philadelphia. 
The gas-engine operations were looked after by Mr. J. G. Culbert- 
son, an engineer of the Westinghouse Company. The washing opera- 
tions were under the superintendence of Mr. John D. Wick, of 
Chicago, general foreman of the plant. The coking plant was in 
charge of Mr. Fred. W. Stammler, of Johnstown, Pa., assisted by 
Mr. B. B. Boyd, of Uniontown, Pa. The briquetting tests were 
directed by Dr. Joseph Hyde Pratt, of the University of North Caro- 
lina and the North Carolina Geological Survey, assisted by Mr. A. A. 
Steel. The plans for the chemical laboratory, its equipment and oper- 
ations, were under the direction of Prof. N. W. Lord, of the Ohio 
State University. His chief assistant at the coal-testing plant was 
Mr. E. E. Somermeier, who is also his chief assistant in his university 
work. The engine room was in charge of Mr. Otto Kinner, a mechan- 
ical engineer, of St. Louis, and the electrical apparatus was looked 
after by Mr. Jos. Underwood, also of St. Louis. Mr. Louis H. Leg- 
ler, of Indiana, rendered valuable service as timekeeper and general 
assistant foreman of the plant. 
