PLATE 41 



A. — Bacterium vitians: Cross-section of stem showing bacteria in place. The 

 organism has been stained with carbol fuchsin. X 1,000. 



B. — Bad. vitians: Polar flagella stained with Casares-Gil's flagella stain; from a 

 young agar culture. X800 (about). 



C. — Bact. vitians (Virginia): Polar flagella stained with Casares-Gil's flagella stain. 

 Eighteen rods in this field bear flagella. XSoo (about). 



D. — Bact. marginale: Grown on agar for two days and then stained ^Vith Ribbert's 

 capsule stain. Photomicrographed by Dr. Erwin F..Smith. X800 (about). 



E. — Bact. 7narginale: Flagella stained with Casares-Gil 's flagella stain. X800 (about) . 



F, — Bact. marginale: Cross-section of a diseased, shriveled leaf showing bacteria in 

 the tissues. Stained with carbol fuchsin. Photomicrographed by Dr. Erwin F. 

 Smith. X 800 (about). 



