pES^SE?] INTRODUCTION. 13 
One Allis Corliss engine, contributed by the Allis-Chalmers Com- 
pany, of New York and Chicago. The Corliss engine was belt-con- 
nected to a Bullock electric generator contributed by the Bullock 
[Electric Manufacturing Company, of Cincinnati, Ohio. 
One Frost fire-tube boiler of 100 horsepower and a 50-horsepower 
slide-valve engine, both contributed by the Frost Engine Company, of 
Galesburg, 111. 
One Taylor gas producer, with complete outfit for scrubbing and 
purifying gas, contributed by R. D. Wood & Co., of Philadelphia. 
One Westinghouse gas engine, of 235 brake horsepower, furnished 
by the Westinghouse Machine Company, of Pittsburg, and operated 
by the gas made in the Taylor producer. 
One Westinghouse electric generator, belt-connected to the gas 
engine, contributed by the Westinghouse Electric and Manufacturing 
Company, of Pittsburg. 
Seven motors of different horsepower, required for the operation of 
the different portions of the plant, contributed by the Westinghouse 
Electric and Manufacturing Company. 
One Bartlett direct-heat rotating drier for driving out the moisture 
from washed coals and lignites whose moisture contents were too high 
bo permit successful briquetting, contributed by the C. O. Bartlett & 
Snow Company, of Cleveland, Ohio. 
Two briquetting plants — one exhibited by William Johnson & Sons, 
ji Leeds, England, and one by the American Compressed Fuel Com- 
pany, of Chicago. In order that the briquetting machine of British 
manufacture should be installed in conformity with the law, the 
freight bill was paid by the Western Coal and Mining Company, of 
St. Louis. 
A washing plant equipped with a New Century jig, contributed by 
the American Concentrator Company, of Joplin, Mo., and a modified 
Stewart jig, contributed by the Link Belt Machinery Company, of 
(Chicago. 
The fire brick and common brick used in the construction of the 
soke ovens were donated by the Laclede Fire Brick Manufacturing 
Company, of St. Louis. 
The foregoing statement includes all that might properly be con- 
sidered testing machinery, but the following additional incidental 
equipment was contributed by the firms mentioned: 
One Williams crusher, by the Williams Patent Crusher and Pul- 
verizer Company, of St. Louis. 
A complete outfit of belt-conveying apparatus, contributed and 
installed by the Robins Conveying Belt Company, of New York. 
Scales, by Fairbanks, Morse & Co., of New York and Chicago. 
Smoke-preventing device, automatic steam jet, by H. H. Hughes, 
of St. Louis. 
