CONTENTS. 



Page. 



Vascular Diseases Continued. 



Cobb's Disease of Sugar-cane 3 



Definition 3 



Host-plants 3 



Geographical Distribution 3 



History 3 



Signs of the Disease 15 



Etiology 2i 



Inoculations 21 



Series I, 1903 21 



Series II, 1903 27 



Series III, 1903 27 



Series IV, 1903 3 



Series V, 1904 31 



Series VI, 1905 33 



Series VII, 1906 46 



General Remarks on the Inoculations 46 



Acid Canes Less Susceptible 47 



Conditions Favoring Spread of the Disease . 48 



The Red Stain 49 



Relation to Sereh 52 



Morbid Anatomy 52 



The Parasite Bacterium Vdscularum RGS. ... 54 



Resume of Salient Characters 66 



Treatment 68 



Table of Susceptible and Resistant Varieties. 69 



Pecuniary Losses 70 



Literature 71 



The Sereh Disease of Sugar-cane 72 



Literature 79 



Top-rot of Sugar-cane in Java 81 



Literature 84 



The Humid Gangrene or Polvillo of Sugar- 

 cane in Argentina 85 



Literature 88 



Stewart's Disease of Sweet-corn (maize) ... 89 



Definition 89 



Host-plants 89 



Geographical Distribution 89 



Signs of the Disease 89 



Etiology 91 



Field Observations in 1902 94 



Inoculation Experiments 96 



Series I and II, 1902 96 



Series III to VII, 1902 no 



Series VIII and IX, 1903 1 1 1 



Series X, 1905 112 



Infected Seed as a Means of Distribution 114 



Field Observations of 1903 114 



Page. 



.Stewart's Disease of Sweet Corn (maize) 

 Continued. 

 Etiology Continued. 



Susceptible and Resistant Varieties 117 



Series XI to XV, 1903 121 



Summary 123 



Experiments of 1908 124 



Series XVI to XIX, 1908 125 



General Remarks on Series XVI to XIX 127 



Series XX to XXIV, 1908 128 



Series XXV, 1912 129 



Morbid Anatomy 130 



The Parasite Bacterium stewarli KFS 132 



Resume of Salient Characters 144 



Treatment 145 



Pecuniary Losses 146 



History 147 



Literature 147 



Smith's Disease of Amaranths Bacterium ama- 



ranthi EFS 148 



Literature 150 



Van Breda de Haan's Wilt of Peanut 151 



Literature 153 



English Disease of Mangolds and Sugar- 

 beets 154 



Literature 154 



Blight of Young Rose Shoots 154 



Bacteria in Vessels of Flax Stems 154 



Rathay's Disease of Orchard-Grass Aplano- 



bacler rathayt EFS 155 



Description of Disease 155 



Comment 157 



Personal Observations 157 



Literature 160 



The Grand Rapids Tomato Disease Aplano- 



bacter michiganense EFS 161 



Preliminary Studies 161 



Notes on Cultural Characters 162 



Additional Observations, Inoculation Experi- 

 ments, and Inferences 163 



Resume of Salient Characters 164 



Literature 165 



Spieckermann's German Potato Disease 166 



Literature 167 



Vascular Diseases of Banana 168 



1. Earle's Jamaican Disease 168 



2. Smith's Cuban Disease 168 



3. Rorer's Trinidad Disease Bacillus musae Rr. 170 



4. The Panama Disease 172 



5. South American Diseases 173 



6. Old World Diseases 173 



Literature 173 



111 



