Scientific Intelligence—Medical Chemistry. 385 
crystallization gives very white crystals.—(Jour. de pharmacie, Bull. 
Univ. A. xi. 382.) Quar. Jour. Jul —Sept. 1829. 
2. Plumbagine, a new vegetable substance, (Jour. de Phar.)—M. 
Dulong has obtained a particular vegeto-principle from the roots of 
the Plumbago Europeea,. Lin. is substance crystallizes readily 
from alcohol, ether, or water, in the form of numerous yellow nee- 
dles. On the tongue it first produces a sweet taste, followed by a 
sharp acrid effect, extending to the throat. Its aqueous a 
comes cherry red by alkalies, subacetate of lead, permuriate 
&c.; but acids restore the yellow color, and the plumbagine eimaidss 
smiakiired. Besides this principle, the root contains a black fatty 
matter, and gallic acid. As this root has been used in cases of itch, 
tooth-ache, &c:, and is proposed to be administered as an emetic, it is 
supposed that its active virtues will be found in the plumbagine, to 
ascertain which experiments are in progress. Quar. Jour. Jul.— 
de 1829, 
be 
n 183 asslyei of Ipecacuanha Branca, Root of the Vi ‘ola clans 
by M. Ki auquelin. (Jour. de Phar.) —The root of ihe Ipe- 
iain branca, is of a pale white, divided into many branches, of 
the thickness of a writing pen, much twisted and contracted at une- 
qual.intervals. Its fracture is short, the odor of it disagreeable, the 
taste acrid and nauseous ; the ligneous part is thicker than the bark. 
The substances which compose this root are as follows by weight : 
Emetine, 1,50; Resin, 0.60; Gum, 0.20; Albumen, 0.30; Starch, 
3.203 matter orystallized in casein 0.85; ligneous matter, 7.00.5 
fatty matter and wax, an indeterminate cited Total, 15.95; loss, 
0.05.—Idem. ap 
BS Decomposition of Corrosive Sublimate by Vegetable Bodies.— 
‘ghia to the experiments of M. Fabian, the mucilage of quince 
seed, (semence de coing) and that of salop, decomposes corrosive sub- 
himate, the instant it is mixed with its solution ; but the decoction of 
marshmallow does not ‘produce the same effect, and the extract of ji- 
quorice only partially. —Idem. 
“By Rosaie Acid in Human Weide (Jour. de Phar. XV. 228, ™ 
M: Henry has observed in certain eases of acute rheumatism, ac- 
companied by nervous fever, that’ the urine has been of a very red 
color, and produced an abundant scam on cooling. On analyzing 
Voi. XVIIl.—No. 2. 
