FlG. I. NlTROGEN-FlXING NODULES OF ALFALFA. 



FIG. 2. CROWN-GALL TUMORS OF CRIMSON CLOVER. 



1^ 



FlG. 3. NlTROGEN-FlXING NODULES OF 



CRIMSON CLOVER. 



FIG. 2. CROWN-GALL TUMORS OF ALFALFA. 



