AGRICULTURAL 



BACTERIOLOGY 



A STUDY OF THE 



RELATION OF GERM LIFE TO THE FARM 



WITH 



LABORATORY EXPERIMENTS FOR STUDENTS 



MICROORGANISMS OF SOIL, FERTILIZERS, SEWAGE, WATER, 

 DAIRY PRODUCTS, MISCELLANEOUS FARM PRODUCTS 



AND 

 OF DISEASES OF ANIMALS AND PLANTS 



BY 



H. W. CONN, Ph. D. 



Professor of Biology at Wesley an University 



AUTHOR OP " THE STORY OF GBRM LIFE," " BACTERIA IN MILK AND ITS PRODUCTS," " PRACTICAL 

 DAIRY BACTERIOLOGY," " BACTERIA, YEASTS, AND MOLDS IN THE HOME," ETC. 



UNIVERSITY OF CALIFORNIA 

 LIBRARY 



COLLEGE OF AGRICULTURE 

 DAVIS 



SECOND EDITION, REVISED AND^NLARGED 

 WITH 64 ILLUSTRATION^ 



PHILADELPHIA 



P. BLAKISTON'S SON & CO. 



1012 WALNUT STREET 

 1909 



