SELECTED ARTICLES. 
^^j. 
ART. IV.— NOTE UPON THE DISTINCTIVE CHARACTERS 
OF CALISAYA BARK. By M. Guibourt. 
At the last meeting of the Society of Pharmacy, I present- 
ed on the part of Mr. A. Delondre a specimen of bark, in 
large broad flat pieces, which to a certain extent resembled 
the Calisaya, but which furnished when manufactured, only 
two drachms of sulphate of cinchonia,and no sulphate of quinia. 
Upon the present occasion I think it will be useful to review 
the characters belonging to the true Calisaya bark.* 
It may be covered with the exterior crust, or be deprived 
of it, which circumstances are designated in commerce by the 
terms Calisaya with the peel, ( Calisaya en ecorce J and peel- 
ed Calisaya ( Calisaya monde .) 
That with the peel (epidermis) is obtained both from the 
young and old branches and from the trunk. In the first in- 
stance the epidermis is thin, very rugose, hard, often of a 
grayish colour externally, but brown internally. It is deeply 
furrowed longitudinally and more especially so transversely, 
and when detached from the liber, which is frequently the 
case, it still leaves deep transverse impressions which corres- 
* It ought to be written Colisalla, as Laubert has remarked in the 
Bulletin de Pharmacie, T. II. p. 302. There does not exist a province 
of Peru named Calisaya, which has given its name to the bark, as has 
been supposed upon the faith of a celebrated traveller. According to Dr. 
Poeppig, whose memoir upon the Huanuco barks 1 will probably soon 
publish in French, colla means remedy, and salla means a country full of 
rocks. 
