SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
Bulletin 102, Part 5 
THE MINERAL INDUSTRIES OF 
THE UNITED STATES 
POWER: 
ITS SIGNIFICANCE AND NEEDS 
BY 
CHESTER G. GILBERT 
AND 
JOSEPH E* POGUE 
Of the Division of Mineral Technology 
United States National Museum 
OF 
*'* et^kology 
0SS14 i9)o 
ft ARY 
WASHINGTON 
GOVERNMENT- PRINTING OFFICE 
1918 
