[haerison & barlow] nodule ORGANISM OF THE LEGUMINOSAE 207 



21. Ps. radicicola. from a nodule of Viciii villosa. Plant grown in a.sh-maltose- 

 agar in a flask. Jan. 1, 1005, to May 10, 1905. From this nodule a; 

 pure culture was isolated. 



- v> - 



22. Ps. radicicoln. from invaded root of Vicia villosa. Plant grown in flask I, 

 Jan. 1, 11)05, Ho May 31. 1905. The tap root was generally infected. 



