328 
SELECTED ARTICLES. 
yellow bark of English commerce, which is called on the 
continent Calisaya, or Regia bark. 
Bergen speaks of two distinct kinds of Carthagena bark. 
1st. The china flava fibrosa, called in this country fibrous 
or woody Carthagena bark, and which I find to be identical 
with a specimen sent me by M. Guibourt, under the name of 
Quinquina de Colombie ligneux. 
2. China flava dura, or hard Carthagena bark, which 
includes the Quinquina de Carlhagene jaune, and the 
Carth. brun, of Guibourt. 
As both kinds are imported in the same parcel, and from 
the same place, and are sold as one kind here — as both appear- 
ed in commerce for the first time together — and as their phy- 
sical appearances are very similar, I shall consider them as 
one kind. Geiger suggests whether they may not be the bark 
of the same species at different seasons, or growing in differ- 
ent situations. 
Commerce. — It is imported in drum-like serons, and in 
half chests. 
Characters. — It occurs in quills and flat pieces, the leading 
characters of which are the thin soft epidermis, whose color is 
between yellowish white and ash gray, with a micaceous 
appearance: sometimes the epidermis is wanting. The color 
of the inner surface and other parts of the bark is ochre yellow. 
The transverse fracture is fibrous and splintery, especially in 
the variety called from this circumstance fibrosa. The odor 
is slight, the taste slightly bitter, and astringent. The color 
of the powder varies from that of cinnamon to ochre yellow. 
Botanical History. — I have already mentioned in speak- 
ing of the yellow bark of English commerce, that Carthagena 
bark is obtained from the Cinchona cordifolia. 
Chemical history. — Pelletier and Caventou have analysed 
one kind of Carthagena bark (Guibourt says it was the variety 
he terms brown,) and obtained the following results: — 
Kinates of quinia and cinchonia. 
Yellow coloring matter. 
Tannin. 
