POP—POT . 241 
enjoin you never to think of it in that. teste, aggre J 
so called—trust to nothing but the lancet, emétics, calo- 
mel, and turpentine externally to the throat. Sy dite 
Dose of powdered Senega, j to 3ss, as an - 
the decoction, made by boiling 3j of the contused roots 
in Oj of water, 3ss every 2d or 3d hour, prorenata, 
Orric. Prev. Decoctum Senegz, of the Colleges. z 
For a full account, fee Bi P. C. Barton’s Veg. = Med. 
U. 8. Vol. I. plate 36. 
Speci 2.—POL! GALA RUBELLA. See Bigelow’s Med. Bot. 
A good subje of the species of the genus would — 
be, for an inaug The indigenous species are 
very numerous, and been investigated. 
No. 436,—PoruLus BaLsAMIrera. Carolina Poplar. 
Cabinet specimen, ‘Jeff. Coll. No. 55i—figure of the tree, 
No. 552. 2 
Yields the resin or “ies called American Tacamahaca+ 
the buds are coated with a thick resin; infused in oil, they _ 
make a balsamic oleaginous application to cuts and wounds. 
No. 437.—Porassa Fuss, L. Potassa. E. Kali . 
Causticum. D. ppowedaienots, P-) L. — 
Common Caustic. 
Cabinet specimen, Jeff. Coll. No. 553. if us 
Called the Vegetable Caustic, and Caustic Potash. Used as : 
a powerful escharotic—never, inteesafi: as the Lunar 
Caustic is. 
No, 438.—Potass# Aceras, of the Colleges. 
Cabinet specimen, Jeff: Coll. No. 554. 
Qvatitizs. In masses of a foliated, 
deliquescent, odour slight and peer nd having a st 
pungent taste—f'3j distilled water, at 60° F. diss { 
grains, or 100 parts are soluble in 105 of water—the solu- 
decomposition; soluble in 4 
tion undergoes spontaneous 
times its weight of alcohol; consists of one proportional 
of each of its components, i. e. 45 potass, 43 acetic acid, 
MepicaL Prorerties anv Uses. Ini 
retic ; 2 GE BN DN oe 
ae Aqua pure, 
Spir. Junipert hep. O05 
Make a ome be taken twice a day. 
