29 



(2.) With lar^e amounts of inoculatiing earth: 

 Moisten the seed as above; idi'T as above, if convenient; 

 sow broadcast per acre 20 to 30 bushels of the same 

 earth in as fine a condition as possible, and harrow in 

 seed and' inocnlating earth as promptly as possible. The 

 method of inoculation and the amount of inoculating 

 soil can be varied accordiing to convenience. 



Directions for use accompany the pure cultures sent 

 from Washington. Dr. A. F. Woods, under Avhose di- 

 rection this inoculating material is distributed; author- 

 izes me to state that the Department will supply free 

 inoculating material for alfalfa to any parties whose 

 names I shall send in, and who will furnish their own 

 seed. Applicants isliould state the number of acres that 

 they >\ill plant. 



On prairie soil the writer has repeatedly' observed 

 that alfalfa plants are, when young, well stocked with 

 tubercles. The cause for this is evident from the recent 

 investigation of Dr. C. G. Hopkins, of the Illinois Ex- 

 periment Station. Under date of February 2, 1904, he 

 writes as follows with reference to his bulletin now in 

 press, and gives pennission for tliis use of his results: 

 "The investigations reported in this bulletin prove con- 

 clusively that the bacteria of sweet clover are similar to 

 the bacteria of alfalfa.-' 



RESULTS OF INOCUI-ATIOX OF ALFALFA ON SANDY LAND. 



In an inoculation experiment with alfalfa made by the 

 writer in February, 1897, the yield of alfalfa at the first 

 cutting was increased 336 per cent as the result of in- 

 oculation. The soil within the plots was from a sandy 

 field near Auburn, and the inoculating material was the 

 dust gifted out of bur clover seed and derived from the 

 soil on which bur clover had grown. In several later 



