48 



phenylquinoleine; we wo'nt go into that as it is not our 

 object to go into détail of the structural formula of Cin- 

 chona alcaloids. 



Ail I wished to show here is that it is not at ail im- 

 possible that plants acids play a considérable rôle in the 

 formation of alcaloids. 



Although ail this latter part as far as it concernsthe plant 

 is spéculative, ail what concerns the constitution of thèse 

 bodies is based on really obtained results. 



I therefore do'nt hesitate to state that the results ob- 

 tained along the line of purely chemical investigation com- 

 pel us to find out whieh rôle the plants acids play in the 

 formation of the alcaloids. 



It is along this line that investigations will be continued. 



Mountaingardens of 's Lands Plantentuin. 

 Tjibodas. Oct. 99 



( l ) vide: Pictet p. 81 

 (-) Moens 1. c. 



