AGBICTJLTUEAL AM) 

 INDUSTRIAL BAOTEEIOLOGT 



BY 



R. E. BUCHANAN 



PR0PE8B0B OP BACTBKIOLOGT IN THE IOWA STATE COLLEGE OP 



AGRICULTURE AND THE MECHANIC ABTS, AND BACTERIOLOGIST OF THE 



IOWA AGRICULTURAL EXPERIMENT STATION 



D. APPLETON AND COMPANY 

 NEW YORK :: 1921 :: LONDON 



