VUl CONTENTS 



Page 



Staining Methods 116 



Care of Specimens 119 



Preparation of Illustrations 120 



Photographs 120 



Photomicrographs 123 



Lumiere Plates 126 



Planars 126 



Drawings 126 



Paintings 129 



Card Catalogijbs and Systems of Filing 130 



PART III 

 SYNOPSIS OF SELECTED DISEASES 



I. The Cucurbit Wilt 132 



Type 132 



Cause — Bacillus tracheiphilus EFS 132 



Technic 135 



Determine 137 



For the Organism 137 



Morphology 137 



Cultural characters 138 



Response to Non-nutritional Environment 139 



For the Disease 139 



Signs 139 



Histology 139 



Variability 141 



Transmission 141 



Literature 145 



II. Black Rot of Crucifers 145 



Type 145 



Cause — Bacterium campestre (Pammel) EFS 147 



Technic 149 



Determine 154 



For the Organism 154 



Morphology 154 



Cultural Characters 155 



Response to Non-nutritional Environment 155 



For the Disease 156 



Signs 156 



Histology 156 



Variability 157 



Ti'ansmission 159 



Means ot Prevention 159 



Literature 159 



III. Stew^ahi's Disease of Maize 160 



Type 160 



