X CONTENTS 



Page 



Determine 243 



For the organism 243 



Morphology 243 



Cultural Characters 246 



Response to Non-nutritional Environment 249 



For the Disease 251 



Signs 251 



Histolog}^ 251 



Vaiiabilit}^ 251 



Transmission 252 



Literature 252 



Vll. Bacterial Black Rot of the Potato 253 



Type 253 



Cause — Bacillus phytophthorus Otto Appel 257 



Technic 263 



Determine 268 



For the Organism 268 



Moiphology 268 



Cultural Chaiacteis 269 



Response to Non-nutrituonal Environment 272 



For the Disease 274 



Signs 274 



Histology 274 



Variability 277 



Transmission 278 



Literature 278 



Vin. The Bean Blight 280 



Type 280 



Cause — Bacterium phaseoli EFS 285 



Technic 287 



Determine 291 



For the Organism 291 



Morphology 291 



Cultural Characters 291 



Response to Non-nutritional Environment 293 



For the Disease 294 



Signs 294 



Histology 294 



Variability 295^ 



Transmission 295 



Literature 299 



IX. McCulloch's Cauliflower Spot 300 



Type 300 



Cause — Bacterium ■maculicolum Lvicia McCulloch 304 



Technic 310 



Determine 311 



For the Organism 311 



Morphology 311 



Cultural Characters 312 



