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Bulletin No. 290 
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i sljjt'niit Physics, 48 V' 
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DEPARTMENT OF THE 'INTERIOR: 5 ? 
UNITED STATES GEOLOGB^L SUJWKY 
CHARLES D. WALCOTT, Jhi:k<'|.>k 
PRELIMINARY REPORT 
ON THE 
OPERATIONS OF THE FUEL-TESTING PLANT OF THE 
UNITED STATES GEOLOGICAL SURVEY 
AT ST. LOUIS, MO., 1905 
JOSEPH A. HOLMES 
IN CHARGE 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1 90 6 
