38 



202. ACACIA VEKEK, continued. 



g. Senegal gum. (Gomme Kuteera.) 



Note. The variety du bas dufleuveisihemost esteemed in French com- 

 merce. Specimens d to g are gums which are found mixed with Senegal gum. 

 Gomme vermiculee is white, transparent internally, and occurs in cylindri- 

 cal curved pieces. Gomme pellicuUe is of a reddish yellow tint, and has a 

 sort of vegetable epidermis on various parts of its surface. It is not 

 entirely soluble. Gomme lignirode is a very distinct gum, in large quite 

 opaque pieces of a dull yellowish brown colour. It dissolves in water, 

 leaving a residue of gnawed wood. It is known in French commerce as 

 matrons. According to Guibourt, some other gums, viz. , gum Kuteera 

 (see Stercnlia tragacantha), gomme verte, which is greenish at first but 

 becomes yellowish white on exposure, and is difficultly soluble, bdellium 

 and gomme Gonake from Acacia Adansonii (A. vera, Willd.1), distinguished 

 by its bitterness and dark colour, are also found in gum Senegal. Senegal 

 gum is known from gum arabic by its clear interior, fewer cracks, and 

 toughness. See Hist, des Drag., iii., p. 440. 



li. Sennaar gum. (Sennari Gwm) 



Note. This specimen is white, and looks like the best Turkey gum ; 

 but among it may be seen pieces with a greenish tint. It yields a very 

 glairy mucilage. It is the kind referred to by Hanbury in Pharmaco- 

 grapMa, p. 210, note 3. It probably is identical also with the gomme 

 verte of Guibourt. In English commerce it is known as Sennari gum. 



203. ACACIA SPECIES. 



a. Maculla best gum arabic. " So called by a native doctor 



at Bombay." (P. 145.) 



Note. This is the specimen alluded to in Per. Mat. Med., vol. ii., pt. ii., 

 p. 335 (P. 145). It is probably of African origin ; for, according to Dr. 

 Vaughan, African gum finds it way to Maculla. P. J. [1] , vol. xii., p. 226. 

 The specimen was presented to Dr. Pereira by Mr. Lawrence, Jan., 1834. 



b. East Indian gum. (P. 146.) 



Note. This is called in India, Mocha and Barbary gum. 



c. Surat inferior gum arabic. (P. 147.) 



Note. Specimens 6 and c are those alluded to in Per. Mat. Med., 

 vol. ii., pt. ii., p. 335. 



d. Calcutta gum arabic. 



e. East Indian gum arabic. 

 /. Bengal gum arabic. 



Note. The first three specimens came from Bombay. Specimen e seems 

 identical with the gomme lignirode of Guibourt. See gum Senegal and 

 Feronia elephantum. 



g. Unnamed specimen, resembling East Indian gum. 

 h. Ditto, resembling Cape gum. 



i. Purified gum. Presented by Mr. H. Picciotto. P. J. 

 [1], vol. ix.,p. 16. 



j. Insoluble gum. 

 Note. For adulteration of gum arabic, see P. J. [2] , vol. v., p. 233. 



