WHITE MUSTARD 515 



Benzoin, in the form of the tinotnre, and the benzoates, 

 are serviceable in laryngitis, tracheitis, and bronchitis, to 

 promote secretion and antisepsis. An inhalation of the 

 tincture ( 3 ii.-Oi. hot water) is also very serviceable in these 

 diseases for the same purposes. 



The benzoates are of value in pyelitis and cystitis, 

 particularly in carnivora with a normal acid urine, to acidify 

 and disinfect the decomposing urine and stimulate the tract. 



SiNAPis Alba. White Mustard. 



Synonym. — Sinapis albse semina, B.P. ; semen erucse, 

 yellow mustard seed, E. ;" moutarde blanche, Fr. ; weisser 

 senf, G. 



The seed of Brassica alba (Linne) Hooker filius et 

 Thompson (nat. drd. Cruciferse). 



Habitat. — Southern Europe and Asia; cultivated in 

 temperate climates. 



Description. ^Ahont 2 Mm. in diameter ; almost globular, 

 with a circular hilum ; testa yellowish, finely pitted, hard ; 

 embryo oily, with a curved radicle and two cotyledons, one 

 folded over the other ; free from starch ; inodorous ; taste 

 pungent and acrid. 



Constituents. — 1, a glucoside, sinalbin (CsoH^NjS^Ois), and 

 a ferjjaent, myrosin, 10-15 per cent. The latter converts the 

 former, in the presence of water, into the active principle of 

 the drug, acrinyl sulphocyanide (0,H,ONCS), a very acrid, 

 volatile body, sinapine sulphate (CieH^aNOjHjSO^), and glu- 

 cose ; 2, a bland, fixed oil, 25 per cent.; 3, gum, 20 per cent. 



Dos€.—R., I ss. (15.) ; G., I ss.-i. (15.-30.) ; Sh. & Sw., 

 3 i.-ii. (4.-8.) ; D., gr.x.-xv. (.6-1.). 



Sinapis Nigea. Black Mustard. 



Synonym. — Sinapis nigrse semina, B.P.; semen sinapis, 

 P.G.; moutarde noire (Grise), Fr.; schwarzer senf, G. 



The seed of Brassica nigra (Linne) Koch (nat. ord, 

 Cruciferse). 



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