38 



Sept. 4. ty 10 % NH 4 Sept. 11. 



217 empty Ml 



218 empty Ml 



219 empty full 



Sept 6. Sept 12. 



226 empty full" 

 227 

 228 

 230 

 231 

 232 



Sept 7. Sept 12. 



234 empty Ml 



^' 30 77 77 



236 

 237 

 238 

 94.9 



-^^7? 7? 



243 



77 . 77 



Cinchona caloptera5ep£ 8. in river water until Hept. 13. 



244 empty full 

 247 empty Ml 

 Resuming: 



I. Leaves of C. Succirubra and those of C. Ledgeriana con- 

 tain a many times sufficient quantity of alcaloid to ac- 

 count for ail the alcaloid présent in the bark supposing 

 the leaves to be able to transport their alcaloid towards 

 the bark once in twentyfour fiours. 



II. A Ml leaf of C. Succirubra can empty itself inside 

 of twelve hours. 



III. The disappearance of this alcaloid is not due to it ha- 

 ving been used up by the leaf; the eut leaf is not able 

 to dispose of it, even if in stead of twelf hours one allows 

 36 days for this process. 



IV. An empty leaf of C. Succirubra connectée! with the mo- 



