CONTENTS 



PART I 



A CONSPECTUS OF BACTERIAL DISEASES 

 OF PLANTS 



Page 



Distribution Among Flowering Plants 4 



Period of Greatest Susceptibility 8 



What Governs lNFECTio>i 12 



How Infection Occurs 15 



Time Between Infection AND Appearance OF THE Disease 16 



Recovery from Disease 17 



Agents of Transmission 19 



Extra-vegetal Habitat OF THE Parasites 34 



Morphology and Cultural Characters of the Parasites 35 



Action of the Parasite on the Plant 41 



Reaction of the Plant — Color-changes, Blights, Decays, Distortions, 



Overgrowths 48 



Prevalence and Geographical Distribution 51 



Methods of Control 68 



PART II 

 METHODS OF RESEARCH 



Reference Books 76 



Apparatus 77 



For Preparation ui Culture Media 77 



For Isolation and Care of Cultures 80 



For Preparation and Study of Sections 81 



For the Hot House and Inoculation Experiments 86 



For the Photographic Room 89 



Uses of Culture Media 99 



Preparation of Culture-Media 100 



Technic of Isolation 107 



Care op Cultures 109 



Study of Cultures 110 



Methods of Inoculation Ill 



Time and Place of Inoculation 112 



Care of Inoculated and Control Plants 113 



Preparation of Sections 114 



vii 



