410 



BO T ANY. 



[Sect TIL 



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3 



Ammi Gum^ or Pw^?/ Varnish, said to be produced by 



Valeria Indica. 



Copal. — The origin of this gum-resin in India ? 



Bdellium. — The source of the Persian and African 

 fahe myrrhs of this name, the locaUtics producing them, 

 the native names^ and specimens both of the products and 



the plants, 



Oliba7innu — The above remarks apply to OHbanum. 



Elemi. — The source of the five varieties of Elemi, viz. : 



1. Holland Elemi. 

 Elemi. in bamboos. 



2. Brazilian Elemi. 3. East Indian 



4-- Macula Elemi : and 5. Mexican 



Klem,i. Samples from the various countries, with the 

 plants and native appellations, should be transmitted for 



verification. 



Tragacai 



Mount Lib^ 



Elemi 



-The tragacanths of Mount Ida and 



plants which yield them, nor has Tournefort's relation of 



the formation of this 



d 



^rroed 



It is still more important to ascertain if the tragacanth of 

 Erzeroom is brought into British commerce, and whether 

 it is yielded by the Astragalus strohiliferus. 



Senna--i:he source of the East Indian or Mocha 

 Senna. Is it really the foliage of Cassia lanceolata? 



Catechu. — To observe the processes by which the 

 various kinds of Catechu, Cutch, Terra Japonica, and 

 Gambir are obtained ; and if from trees, whether from 



Unc 



Garni)! r. 



We want to identify the trees with the re- 



spective extracts. 



Cubehs.—J)QQ^ Piper Cubeba or Piper caninum 

 yield cubebs ? If both, which gives the best ? 



m 



Java 



f 



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