PLANT BACTERIA-VOL. 3. 



PLATE 11. 



BACTERIUM STEWARTI. BACTERIUM VASCULARUM. APLANOBACTER MICHIGANENSE. 



(1) Cross-section of inoculated sugar cane (nodal region) showing red and yellow ooze; (2) Do. internodal region of stem. 

 Bacterium stewarti : (3) Litmus-milk culture after 11 days at 25C. (milk fluid); (4) Do., another stock of milk, after 11 daysat27C. 

 (5) Check on tubes. 3. 4. 6, and 7. Aplanobacter michiganense: (6) Litmus-milk. 8 days at 27C.: (7) Do. after 11 days at 27C., 

 litmus reduced, milk fluid ; (8) Potato streak culture after 48 hours at 25C.; (9) End of 3rd day at 25C. (10) Check tube of litmuj- 

 rmlk for comparison with 11 and 12. Bacterium vascularum : (11) Litmus-milk Inoculated March 25. 1905, from 16, Octobers (organism 

 originally plated from inoculated cane No. 40) and painted May 2, showing gradual increase in alkalinity with a slight yellow precipitate; 



Do. an older litmus-milk culture, tube X inoculated March 25, 1905, painted June 10 (organism out of cane No. 40); (13) Do! 

 potato cylinder standing in distilled water, inoculated October 19, 1905, from June 7, painted October 24 (descended from cane plant No. 40) . 



