BULLETIN 148.] [MARCH, 1906. 



Ontario Department of Agriculture. 



ONTARIO AGRICULTURAL COLLEGE AND EXPERIMENTAL FARM 



CO-OPERATIVE EXPERIMENTS WITH NODULE- 

 FORMING BACTERIA. 



By F. C. Harrison and B. Barlow. 



The nodules-forming, and nitrogen-fixing bacteria. 

 (Magnified 1,500 times.) 



The issue of a number of bulletins by the United States Department 

 ot Agriculture on " Beneficial Bacteria for Leguminous Crops," "Inocula- 

 tion of Soil with Nitrogen-fixing Bacteria," and the publication of articles 

 on this subject in some of the popular magazines, has called the attention 

 ot the Canadian farming community to the maintenance of soil fertility by 

 the growth of legumes which have been treated with beneficial bacteria, 

 and has resulted in the many requests for information to the Bacteriologi- 

 cal Department of the College with demands for samples of the necessary 

 bacteria for the purpose of treating various crops such as clovers, peas, 

 beans, etc. 



