JONES SOFT ROT OF CARROT, ETC.: CAUSE 



235 



Fig. 177. — ^Agar poured plates of Bacillus carotovorus? (Jones 3a?) on +15 

 peptone beef agar at 25°C. for 10 days. Photographed May 3, 1919. Culture 

 long in my laboratory and frequently transferred along with other soft rot isolations. 

 Possibly confused in some transfer with Bacillus aroideae. This is the culture 

 that was infectious to calla lily, and various other statements in the text respecting 

 B. carotovorus are based on this organism. 



