CHAPTER VII

.

THE CULTIVATION OF COCA 28

Dr. Rusby on its modern cultivation in Bolivia—Quality of the leaves—The harvest—Diseases of the Coca-plants—Mode of drying and exporting the leaves—Probable results of the exportation of the culture to Mexico, East and West Indies, and Jamaica.

## CHAPTER VIII .

DR. MANTEGAZZA’S EXPERIMENTS 37

Résumé of its uses and abuse in Peru—Personal experiments—Summary of results.

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