WHITE MUSTARD 491 



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

 are serviceable ia 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 erucae, 

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

 senf, G. 



The seed of Brassica alba (Linne) Hooker filius et 

 Thompson (nat. ord. Cruciferae). 



Habitat. — Southern Europe and Asia ; cultivated in 

 temperate climates. 



Description. — About 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^NoSjOie), and 

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

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

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

 volatile body ; sinapine sulphate (C16H23NO5H2SOJ, and glu- 

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



Dose.—K., 5ss. (15.); C, § ss.-i. (15.-30.); Sh. & Sw., 

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



Sinapis Nigra. 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. 

 Cruciferae). 



