PLANT BACTERIA. VOL. 3. 



PLATE I. 



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



Pits. i. t, J show bacterial ooze from vascular bundles of freshly cut stems Pill, i and 2 are from plant 6. fig. 3 from plant 8. Xi. Pic. 

 4. section in vicinity of a lower node, showing dark red stain in vascular strands. Prom plant 6. X J. rift*. S. 6. 7. . 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 i 75 circa. Plants inoculated by needle-pricks, Feb. 6. 

 looj, on the blades of the leaves, l to 3 feet away. Time about 2.5 months. 



