8 HISTORY AND CAUSE OF THE COCONUT BUD-ROT. 



Page. 

 Plate X. Fig. 1. Diseased coconut tree, showing blackened part of sheath 

 above the white, healthy portion. Fig. 2. Diseased coconut tree, 



showing dark water-soaked spots at base and side of petiole 56 



XI. Seedling coconut split open to show parts 122 



XII. Result of inoculating Bacillus coli into coconut seedlings 130 



XIII. Fig. 1. Drawing from microtome section of diseased tissues of bud- 



rot, showing bacteria in stomatal cavity. Fig. 2. Drawing from 

 microtome section of diseased tissues of bud-rot, showing bacteria 

 between the walls of normal cells 154 



XIV. Fig. 1. Microtome cross section through small leaf bud of coconut 



palm. Fig. 2. Enlargement of a portion from midrib of leaflet.. 158 



TEXT FIGURES. 



Fig. 1. Map of the eastern end of Cuba 12 



2. Map of Jamaica 15 



3. Map of Trinidad 17 



4. Map of a portion of British Guiana 18 



5. Map of the tropical countries of the world 21 



6. Diagram showing diseased coconut trees in Trinidad 31 



7. Map of Porto Rico 36 



8. Diagrammatic cross section of bud of the coconut palm 37 



9. Diagrammatic longitudinal section of bud of the coconut palm 37 



10. Diagrams showing the progress of the bud-rot in a coconut grove at 



Baracoa, Cuba, from March 10 to October 21, 1908 50 



228 



