80 



308. (3) PALE BARK. (C. officinalis, L.) 



a. "Bark from an old parcel in the London Docks, 



described by Howard in P. /. [1], vol. xi., p. 494, 

 var. c." A good specimen of the var. a occurs in 

 Howard's collection. 



b. " Bark sent by Don Biofrio, from the mountains of 



Uritusinga Loja " (formerly spelt Loxa). 



c. "Bark of C. officinalis grown in Ceylon, probably 



under moss." 



d. Section of small stem of C. officinalis, L., received from 



India in 1871. 



e. Var. colorada del Bey, from Ootacamund. 



f. Var. crispa, from Ootacamund. 



g. Boot bark of C. officinalis from the Neilgherries, 1874. 

 This specimen contains 0-8 per cent, of . quinidine. 



h. Benewed bark of C. officinalis, 1875. 



This specimen con? ains 0-2 per cent, of quinidine. The natural bark 

 of the same plantation yielded only 0-4 per cent. See P. J. [3] , vol. v., 

 p. 1025. 



Note. These barks illustrate a paper in P. J. [3], vol. ii., p. 361. 

 See also P. J. [1] , vol. xi., p. 497, No. 31. 



(4) PALE BARK from India. ((7. officinalis, L.) 



a. Quills, from Ootacamund, Madras Presidency. 

 This specimen has the peculiar coarse rugged appearance characteristic 

 of the bark produced by the variety of C. officinalis which is called crispa 

 at Ootacamund. (C. officinalis var. crispa is quite a different plant from 

 C. crispa, Tafalla, which has hairy warts on the leaves.) Analysed by 

 Howard, this specimen was found to contain 



Quinine 4-70 



Cinchonidine 0*90 



Quinidine 0-30 



Cinchonine .., 0-50 



6*40 



6. Quills. 

 Analysed by Howard, this specimen was found to contain 



Quinine 4 "10 



Cinchonidine 1'30 



Quinidine O'lO 



Cinchonine 0-20 



5-70 



c. Quills. 

 This specimen was found by Howard to contain 



Quinine 3-20 



Cinchonidine ; . ... 1-00 



Quinidine trace 



Cinchonine 0-10 



4-30 



