UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1452 
Washington, D. C. ▼ November, 1926 
PROPERTIES OF THE COLLOIDAL SOIL MATERIAL 
By 
M. S. ANDERSON and SANTE MATTSON, Associate Chemists 
Soil Chemical Division, Bureau of Soils 
CONTENTS 
Page 
Introduction 1 
Soil Colloids Studied 2 
Properties of Colloidal Soil Materials 3 
Relations between the Properties of Soil Colloids 32 
Relation between Properties and Chemical Composition 36 
Character of Soil Colloids 42 
Summary 43 
Literature Cited 44 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1926 
