444-2 
pered bottle and allowed to stand for eight days in a dark, cool place. The tincture 
is then separated by straining and filtering. Thus prepared, it has a very deep 
brownish-red color by transmitted light, a taste at first cooling and sour, then like 
weak tea, and a very acid reaction. 
CHEMICAL CONSTITUENTS.—I am unable to find any chemical data regard- 
ing this plant, with the exception of the flowers; they have been analyzed, but 
show nothing of the active principle, which probably lies in its acid. 
PHYSIOLOGICAL ACTION.—The true action, physiologically, of this plant is 
not known. The provings have been carefully made, and show symptoms of some 
importance, but are not sufficient to determine its sphere. 
DESCRIPTION OF PLATE III. 
1. Upper part of a plant from W. Brighton, S. L., July 5th, 1879. 
2-4. Flowers. 
3. Section of flower. 
5- Root. 
6. Pollen x 380. 
7. Seed (enlarged). 
