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418 



BOX AK Y. 



[Sect. XII. 









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Quassia,— Why is Sur'mam Quassia superseded by 

 that from Jamaica ? A comparative examination of the 

 two barks cheiuically is required. 



Angostura Bark. — To trace the different sorts to their 

 true sources in Orinoco. 



Tons les Mais -—A, nutritive fecula, prepared at St. 



Kitts. From what species of Canna is it derived ? 



Contraycrva. — Is the Brazilian article yielded solely 

 by Dorsteiiia Contrayerva, or by other species too ? 



Cojjaiva. — To determine what species of plants afford 

 the best and worst kinds respectively in Brazil. 



To trace accurately the true kinds to the 



Cinchona. 



trees seen to produce the barks in Peru. 



False Cinchonas. — To obtain authentic samples of Qiiiu' 

 quina Colorada of Brazil, St. Lucia bark of Mexico, and 



Piavi bark (of Brazil). 



Cevadilla, — To determine whether the Helonias officii 



4-1, 



e 



nalis or Veratrum SahadiUa^ both Mexican plants, is 

 best adapted for the preparation of Veratrine. 



Cohoon Oil. — The source is unknown of this solid oil, 

 which resembles that from the cocoa-nut : it is said to be 



( 



B 



Aloe.—Whzi 



alFords the drug thus 

 called ? Is it not a plant imported from Africa ? No 

 true Aloe appears to be an original native of the New 

 World, any more than a true Cactus is aboriginal of the 

 Old World. 



Many gums paid drugs are said, in ' Edwards's Voyage 



up 



the Amazon River,' to be exported from Para in 

 f>ra;sil Whitlier are they sent ? Whtxt are they ? And 

 what are the plants which yield them ? 



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