PLANT BACTERIA, VOL, 



PLATE 2, 



Black Rot of Crucifers. 



Cabbage-leaf (plant 402), showing three marginal infections which began in groups of water-pores as the result of spraying Bacteriuni 

 campeslre upon the plant. The spraying was made Dec. 9. 1904, and the photograph at the end of two months (Feb, 6), 



