NAT. ORDER. PAPAVERACEjE. 
127 
mordant to fix his dye, it appears that the color of flannel and silk 
stained with the juice, could never be entirely washed out ; that 
the sulphate of alumine, or alumine alone, and the niurio-sulphate 
of tin, are tolerable good mordants for flannel, cotton, silk and linen. 
Murio-sulphate of tin was the only mordant that fixed the color on 
cotton and linen. I have heard that this plant was employed as a 
dye, in some of the woollen-cloth manufactories in Delaware. If 
success has been obtained in fixing the color permanently, there can 
be no doubt that the dye obtained from this root will become a 
highly-important article in domestic manufactures. It is said that 
in Maryland, the farriers give the root of Sanguinaria to horses, to 
induce sweating, and to promote the shedding of their old coats of 
hair. 
