& 



45 



going species. The divisions of the leaves reach to the midrib, the 

 leaves are rough-hairy, and the pods bristly. The seeds are pale yel- 

 low and smooth. 



Collection and uses of seeds. — The seeds are to be collected in the 

 same manner as those of black mustard. White mustard seed has no 

 odor in its entire state, and when water is added in grinding it the 

 odor does not become so pronounced as in the case of black mustard, 

 neither is the taste so pungent. 



In medicine mustard seeds are used principally in the preparation 

 of plasters and poultices. They are used also in dyspepsia, and in 

 large doses act as an emetic. 



Imports and prices. — The imports into the United States of black 

 and white mustard together during the fiscal year ended June 30, 1903, 

 amounted to 5,302,876 pounds. The price ranges from 3 to 6 cents 

 per pound for both the black and white mustard seeds. 



188 



