PLANT BACTERIA, VOL. 3. 



PLATE 4. 





I 



m 



Rot of sugar-cane due to Bacterium vascularum. 



Leaves removed and top of cane split longitudinally to show advanced bacte- 

 rial decay. This decay at the top includes all but the surface of the cane: 

 Nodes red, cavities in the internodes full of yellow bacteria. A little far- 

 ther down the cavities disappear. Base of cane sound. Inoculated Feb. 6, 

 1903. Photographed June 15, 1903. 



