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, Pu. D. 
FORMERLY PROFESSOR OF BIOLOGY AT WESLEYA UNIVERSITY 
AUTHOR OF ‘‘'THE STORY OF GERM LIFE,” “‘BACTERIA IN MILA AND ITS PROD- 
UCTS,” “PRACTICAL DAIRY BACTERIOLOGY,’ “BACTERIA, YEASTS, 
AND MOLDS IN THE HOME,’” ETC. 
THIRD EDITION, REVISED BY 
HAROLD JOEL CONN 
ASSOCIATE BACTERIOLOGIST, NEW YORE 
AGRICULTURAL EXPERIMENT STATION 
WITH 63 ILLUSTRATIONS 
PHILADELPHIA 
P. BLAKISTON’S SON & CO 
1012 WALNUT STREET 
