The Soil Solution 



The Nutrient Medium for Plant Growth 



By 



FRANK K. CAMERON 



In Charge, Physical and Chemical Investigations, Bureau of Soils, 

 U. S. Department of Agriculture 



EASTON, PA.: 



THE CHEMICAL PUBLISHING CO. 



1920 



LONDON, ENGLAND: 



WILLIAMS & NORGATE 



14 HENRIETTA STREET, COVENT GARDEN, W. C. 



^ 7 8 r s <1 



tl s O *J 3 



