Polygala seneka. £45 
white sub-sessile flowers. The other g. rosea, which is either smooth- 
ish or pubescent; having linear leaves, a loose alternate-flowered 
spike, and rose-coloured flowers. «. grows from Canada throughout 
the Allegheny mountains. s. in Carolina and Georgia. The plant 
is generally found on the sides of hills and in dry woods. It is abund- 
ant in Kentucky, Ohio, and Tennessee, and flowers from June to 
August. It was cultivated in England as early as 1759, by Philip 
Miller, and is still found at Kew Garden and other botanic grounds. 
CHEMICAL PROPERTIES. 
To the taste, the root is bitter, pungent, subtle and peculiar; but 
it has little or no smell. Both aqueous, and spirituous menstrua ex- 
tract its virtue ; but the alcoholic tincture obtains them most com- 
pletely. The powder in substance, however, is generally believed to be 
more active than either the tincture or decoction, The latter when 
first taken are not peculiarly unpleasant, but speedily stimulate the 
mouth and fauces, and produce a free discharge from the salivary 
glands. A tincture of the root in rectified spirit, was formerly in 
great repute ; and it was said to be more active and permanent in its 
effects It is now disused. It has been said, and perhaps not without 
foundation, that the bark of the root contains most of the active 
power of the plant ; and that the ligneous portion is comparatively 
inert. To this opinion Dr, Cullen inclines, though at the same time 
