.SOIL CONDITIONS 



AND 



PLANT GROWTH* 



BY 



EDWARD J. RUSSELL, D.Sc. (LoND.), F.R.S. 



DIRECTOR OF THE ROTHAMSTED EXPERIMENTAL STATION, HARPENDEN 



WITH ILLUSTRATIONS 



FOURTH EDITION 



LONGMANS, GREEN AND CO. 



39 PATERNOSTER ROW, LONDON 



FOURTH AVENUE & 30TH STREET, NEW YORK 



BOMBAY, CALCUTTA, AND MADRAS 



1921 



