PLATE * 
Bacterium gummisudans on gladiolus 
A. —Lesions showing bacteria arranged in layers in the central cavity and also in 
the cells x and y where a part, at least, of the cell wall still exists. 
B. —Early stage of stomatal infection. Only a few bacteria are in the stomatal 
chamber and the adjoining intercellular spaces. X about i ,000. 
C. —Capsules. Bacteria from a 4-day beef agar culture. X2,000. 
D. —Flagella. Bacteria from 2-day-old beef agar culture. Casares-Gil's stain. 
Bacteria are viscid and it is difficult to get an even distribution of single rods. X 2,500. 
E. —Later stage than B. Bacteria in great numbers have penetrated widely into 
the intercellular spaces but the cell walls are as yet only slightly affected. 
F. —Surface and buried colonies on beef agar plate (3 weeks old). The surface 
•colony shows the characteristic striations. X5. 
