THE ROTHAMSTED MONOGRAPHS ON 

 AGRICULTURAL SCIENCE. 



Edited by Dr. E. J. RUSSELL, D.Sc, F.R.S. 



During the past ten years there have been marked develop- 

 ments in knowledge of the relations between the soil and the 

 growing plant. The subject involves physical, biological, and 

 chemical considerations, and its ramifications are now so wide 

 that they cannot be satisfactorily dealt with in detail in any 

 one book. These monographs collectively cover the whole 

 ground. In " Soil Conditions and Plant Growth " the general 

 outlines are presented : in the monographs the various divisions 

 are fully and critically dealt with by the Heads of the Depart- 

 ments concerned at Rothamsted. A homogeneous treatment 

 is thus secured that will, it is hoped, much facilitate the use of 

 the series. 



SOIL CONDITIONS AND PLANT GROWTH, Fourth Edition. 

 By Edward J. Russell, D.Sc. (Lond.), F.R.S. 



The following volumes are in preparation ; — 



SOIL PHYSICS . . . By B. A. Keen, B.Sc. 



SOIL PROTOZOA . . By D. W. Cutler, M.A., and 



L. M, Crump, M.Sc. 



SOIL BACTERIA . . By H. G. Thornton, M.A. 



SOIL FUNGI AND ALG^ By W. B. Brierley, S. T. Jew- 

 son, B.Sc, and B. M. Bristol, 

 D.Sc. 



CHEMICAL CHANGES IN 



THE SOIL . . . By H. J. Page, B.Sc. 



\ LONGMANS, GREEN AND CO., 



LONDON, NEW YORK, BOMBAY, CALCUTTA, AND MADRAS. 



