ORUCIFERAL. et 
. the stomach, and is therefore useful when narcotics have been 
taken in poisonous doses. In small doses mustard flour is” 
_ carminative and sialagogue, and promotes digestion by increas- 
. ing the flow of saliva and gastric juice. The seeds act in the 
same way, but owing to their mucilaginous coating the action 
.is more prolonged:and milder. During excretion mustard 
irritates the kidneys and causes diuresis, 
‘Description.—Four kinds of mustard are generally to 
be found in the Indian market, namely, 1st, Karachi mustard, 
 B. nigra, var (?)—Globular, of a dark brown colour, surface 
rough,, generally covered with a white pellicle, giving the 
seeds a. grey colour; size about jz of an inch in diameter. 
ae hee eee te 
2nd, B. nigra—Seeds Seba, dark reddish brown, clean 
and bright; size about 4 of an inch in diameter ; surface 
rough, bat less so than that of the Ist kind. 
a 
a 
a 
i 
: 
3rd, B. juncen—Seods oblong, light reddish How, x cleat 
nd bright; length 7, of an inch; ‘Surface does not appear 
ough unless Pan rind ; 
; Ath, B. campestris—Seeds very slightly oblong, ii or. 
reddish brown, clean and bright; diameter ;!; of an inch or 
- more; surface smooth to the caked eye, but seen to be finely 
_ reticulated under a magnifying glass. 
The third kind is preferred by the natives, and may be con- _ 
sidered the officinal mustard of India; it has a Shas bright a 
rich yellow colour when powdered. 
Microscopie structure.—The white pellicle which covers the 
Karachi seeds consists of hexagonal cells. 
are best seen in the Karachi mustard on seo of 
greater size. 
Chemical composition.—By distilling the sied 
acerated) of B. gre and B, Jneces with 
