508 



TABLE OF ALKALOIDS. 



Chap. XXVIII. 



the cliinchonidine of G. Gmdaminea is considered by Mr. 

 Howard to be scarcely if at all inferior to quinine, and Dr. 

 J. ]\Iacplierson thinks so highly of the value of chinchonine 

 that he considers it to be of little importance whether the 

 species introduced into India are rich in quinine or chin- 

 chonine. This gentleman speaks from experience acquired 

 by long practice in the East Indies.^ 



The following is a table of the largest amount of alkaloids 

 extracted from, and the price in the London markets of the 

 barks of species of chinchonae now introduced into India : — 



SPECIES. 



C. Uritusinga 



Largest amount of alkaloids 

 extracted from the bark. 



C. Chahuarguera 

 C. crispa .. .. 



(tabla 



C. succirubra 



C. Calisaya 



:3"8 per cent, of quinine and chin-) 

 ^ chonidine J 



3'5 per cent 



3'o per cent 



( 8"5 per cent., of which 5 per cent. 1 

 1^ was quinine J 



Price in London per lb. 



of dried bark, 



in March, 1862. 



I •]) 1/^ percent, of quinine and chin-] 

 ' \ chonine J 



rtabla 

 tquill 



C. nitida .. 

 C. micrantha 

 C. Peruviana 



C. lancifolia 



5 per cent, of quinine . . . . 

 3"5 per cent, of quinine .. 

 2*2 per cent, of chinchonine 

 2'7 per cent, of chinchonine 

 3 per cent, of chinchonine . . 



8 



4 6 



1 5 per cent, of quinine and chin- 

 I chonine 



1 6 



Price of quinine . . 

 „ chinchonine 



8s. per 

 Is, 



oz.l 



in London in March 1862. 



Under cultivation the barks may be expected to yield a 

 much larger per-centage of alkaloids than they ever do in 

 their wild state. 



* Quinine and Antiperiodics in their Therapeutic Relations, by Dr. J. 

 Macphersou (Calcutta, 1856), p. 27. 



