ILLUSTRATIONS. 



PLATES. 



Page. 



Plate I. Abnormal branches and involucres of Egyptian cotton 60 



II. Bolls produced on short axillary branches of Pvgyptian cotton 60 



III. Coffee tree, Maragogipe variety, showing three upright branches 



bearing numerous lateral branches 60 



IV. Upright and lateral branches of coffee 60 



V. Abnormal formation of lateral branches of coffee 60 



VI. A young cacao tree with two whorls of branches 60 



VII. Fig. 1. — Petioles of leaves from uprights and whorl branches of 

 cacao. Fig. 2. — Section through banana rhizome showing origin 

 of sword suckers 60 



TEXT FIGURES. 



Fig. 1. Diagram of a cotton plant with two vegetative branches and numer- 

 ous fruiting branches 26 



2. Diagram of a cotton plant with numerous vegetative branches and no 



fruiting branches 27 



3. Diagram of a cotton plant with six vegetative branches and numerous 



fruiting branches 28 



4. Diagram of a rubber tree with one permanent vegetative branch and 



numerous temporary fruiting branches '. 32 



5. Diagram of a coffee tree with a simple trunk and numerous lateral 



fruiting branches 36 



6. Diagram of a coffee tree with two upright branches and numerous 



lateral branches 37 



7. Diagram of a cacao tree with three upright shoots and three groups of 



whorl branches . .• 38 



8. A broad-leaved sucker of a banana plant from Costa Rica 43 



9. Sword suckers of the commercial banana, used in setting out planta- 



tions in Costa Rica -14 



198 

 6 



