Principles of Agricultural Chemistry 



BY 



G. S. FRAPS, Ph.D. 



Associate Professor of Agricultural Chemistry, Agricultural and 



Mechanical College of Texas. Chemist, Texas 



Experiment Station. State Chemist 



E ASTON, PA. 



THE CHEMICAL PUBLISHING CO. 

 1913 



LONDON, ENGLAND 



WILLIAMS & NORGATE 



14 HENRIETTA STREET, COVENT GARDEN, W. C. 



