THE BROWN ROT OF SOLANACEAE : MORPHOLOGY 191 



FIG. 133. Surface and buried colonies, of Bacterium solanacearum. Agar 

 poured plate of July 13, 1918. Photographed July 17, 1918. X 8. Four of the 

 five surface colonies flowed when the plate was clamped vertically to photograph. 

 From a broken negative. 



