BACTERIA IN RELATION 

 TO SOIL FERTILITY 



BY 



JOSEPH E. GREAVES, M.S., Ph.D. 



Professor of Bacteriology and Physiological Chemistry, 



Utah Agricultural College 



Author of "Agricultural Bacteriology" 



AND 



ETHELYN O. GREAVES, M.S. 



S.ftrt,f 



•J^" 



New York: 



D. VAN NOSTRAND COMPANY 



Eight Warren Street 

 1925 



