LEGUME INOCULATION AND THE LITMUS REACTION OF SOILS. 



9 



Table III. 



-Relation between the litmus reaction of soil and the inoculation of vetch 

 with pure cultures of nodule bacteria — Continued. 



LITMUS RE.VCTION F.MNT PINK. 



LITMUS UNCHANGED. 



Bandon, Oreg 



Lavvrenceville, Ga. 

 Shorter, Ala 



Piodinonl 



Edge of prairie. 



-I- 

 + 

 



LITMUS KK \( TION BLUE. 



Arlington, Cal 



Gainesville, Ga 



Glastonbury, Conn. 



Anniston, Ala 



Columbia, S. C 



Kussellville, .\la. . . 

 Hermiston, Oreg... 



Pacific coast or arid. . 



Central Piedmont 



New England 



Hagerstown 



Coastal or I'iedmont. 



Pure limestone 



Intermountain 



+ 

 + 



In (lealino; with crimson clover, it seems that the inoculation of 

 this crop bears no relation to the litmus reaction. All the results 

 are very similar, though it must be admitted that the data in regard 

 to the blue reaction are inadec^uate. 



Table iV. — Relation between the litmus reaction of soil and the inoculation of crimson 

 clover with pure cultures of nodule bacteria. 



LITMUS REACTION RED. 



LITMUS REACTION FAINT PINK. 



(Cir. 71] 



