C iN T E N T S . 



Page. 



Introductory statement 1 



Inventory G 



Index of common and scientific names 95 



ILLUSTRATIONS. 



Page. 



Plate I. A hard-shelled passion fruit from tropical America. (Passi- 



flora maliformis L., S. P. I. No. 53180) 36 



II. The parent tree of the Carchi avocado. {Per sea americana 



Mill., S. P. 1. No. 53185) 36 



III. The Carchi avocado, a variety of the Mexican race. {Persea 



americana Mill., S. P. I. No. 53185) 36 



IV. The Yungara potato, one of the best varieties of the Ecua- 



dorian highlands. {Solanum tuberosum L., S. P. I. No. 



53195) 36 



V. The higacho, an Andean relative of the papaya. (Carica 



chrysopetala Heilborn, S. P. I. No. 53754) 86 



VI. Akala, a giant Hawaiian raspberry. {Ruhus macraei A. Gray, 



S. P. I. No. 53847 86 



Figure 1. Map of Burma, Assam, and Siam, showing the route followed 

 by J. F. Rock in his successful hunt for the true chaul- 

 moogra tree iv 



III 



