UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 867 
Contribution from the Bureau of Plant Industry 
WM. A. TAYLOR, Chief 
Washington, D. C. PROFESSIONAL PAPER September 3, 1920 
THE CASTOR-OIL INDUSTRY 
By 
J. H. SHRADER, formerly Chemical Technologist, Office of Drug, 
Poisonous, and Oil Plant Investigations 
CONTENTS 
The Source of Castor Oil Manufacture of Castor Oil 
Trade and Commerce Properties of the Oil 
The Inspection or Valuation of Castor Uses of Castor Oil 
Conclusions 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1920 
