MCCULLOCH S CAULIFLOWER SPOT! CAUSE 



305 



Fi<;. 234. Bacterium maculicolum: Cross-section of cauliflower inflorescence 

 (buds) showing depth of black spotting. From a pure-culture inoculation made 

 November 20, 1916, using the Florida organism. Collected and fixed December 7. 

 Slide 1310.B5, second section, upper row. Carbol fuchsin stain. 16 mm., 4 oc. 



50 bellows. 

 20 



