CRUDE DRUGS. 



593 



tin, which crystalHzes in prisms. A fixed oil, resin, and a prin- 

 ciple resembling tannin ; calcium oxalate, in the form of rhombo- 

 hedral crystals ; and ash about 5 per cent, are also present. 



Allied Drugs. The immature fruits of Citrus Anrantiimi are 

 sometimes collected and are known as orange berries. They are 

 nearly globular; 5 to 20 mm. in diameter, greenish or brownish- 

 black, granular rugose; the internal structure resembles that of 

 orange fruits, but the seeds are rudimentary ; and the taste is 

 aromatic and bitter. 



Fig 256a. Tamarindus indica: A, flowering branch with paripinnate leaves; B, 

 flower bud; C, dorsiventral (irregular) flower; D, longitudinal section of flower showing 

 unilocular ovary; E, somewhat curved, indehiscent legume; F, G, transverse and longi- 

 tudinal sections of the seed. After Taubert. 



TAMARINDUS. TAMARIND. The preserved pulp of 

 the ripe fruit of Tainarindus indica (Fam. Leguminosae), a tree 

 (Fig. 256a) indigenous to tropical Africa and cultivated in the 

 West and East Indies (p. 294) from whence the two chief 

 commercial varieties are obtained. 



West Indian Tamarind. Usually a blackish-brown mass, 

 with a distinct odor and strongly acidulous, sweet taste, and in 

 which are embedded numerous seeds enclosed in a loose, tough 



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