PLANT BACTERIA, VOL. 3. 



PLATE I. 



Cross-sections of sugar-cane inoculated with Bacterium vascularuin. 



Figs, i, 2, 3 show bacterial ooze from vascular bundles of freshly cut stems. Figs, i and 2 are from plant 6, fig. 3 from plant 8. X3. Fig. 

 4, section in vicinity of a lower node, showing dark red stain in vascular strands. From plant 6. X 3- Figs. 5, 6, 7. 8, sections of 

 stem, photographed after being under alcohol for some weeks. The white spots are hardened masses of bacteria. The dark spots are 

 reddened bundles; on one side is a bacterial cavity opening to the surface, X 1-75 circa. Plants inoculated by needle-pricks, Feb. 6, 

 1903, on the blades of the leaves, 2 to 3 feet away. Time about 2.5 months. 



