SMITHSONIAN INSTITUTION 
UNITED STATES NATIONAL MUSEUM 
Bulletin 102, Part 2 
THE MINERAL INDUSTRIES OF 
THE UNITED STATES 
FERTILIZERS: AN INTERPRETATION OF THE 
SITUATION IN THE UNITED STATES 
BY 
JOSEPH E. POGUE 
Of the Division of Mineral Technology 
United States National Museum 
mi' 
\ 5 AU P1R V yori 
vl 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE, 
1917 
