UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1413 
Washington, D. C. V August, 1926 
COCOA BY-PRODUCTS AND THEIR UTILIZATION 
AS FERTILIZER MATERIALS 
G. P. WALTON, Associate Chemist in Charge 
and 
R. F. GARDINER, Assistant Chemist 
Organic Nitrogen Investigations, Fertilizer Resources Division 
Bureau of Soils 
CONTENTS 
P. t e 
Introduction 1 
The Cacao Bean and Its Products 2 
By-Product Cocoa Press Cake and Powder 5 
Solvent-Extracted or Defatted Cocoa Residue 28 
Cacao (or Cocoa) Shell 33 
Summary • 39 
Literature cited 4l 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1926 
