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 



Histology . . ... 251 



Vaiiability 251 



Transmission 252 



Literature 252 



VII. 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 



VIII. 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. McCuLLOcn's CAULIFLOWER SPOT . 300 



Type. ... . . 300 



Cause Bacterium maculicolum Lucia McCulloch 304 



Technic. . 310 



Determine 311 



For the Organism . . .311 



Morphology. . 311 



Cultural Characters . .312 



