ON CINCHONA BICOLORATA. 
51 
bark, reports, in the table accompanying the description of the 
false cinchonas, the following reactions : the infusion red 
dened litmus, with gelatine formed a slight cloudiness, with 
oak bark a precipitate, with galls a precipitate, with sulphate 
of iron a greenish black precipitate, with oxalate of am- 
monia a colored precipitate, with tartar emetic no reaction. 
It results from the experiments of Brera, — 1st, that the 
Cinchona bicolorata, when given in the quantity of half an 
ounce, cures intermittent fevers, while two ounces of the com- 
mon cinchona is required. 2d, that the fevers which are cured by 
it rarely reappear, which happens when Peruvian bark is 
employed. 3d, that it has operated with great efficacy in a 
pernicious cardialgic fever, with vomiting. 4th, that the 
small quantity in which it is used prevents it from occasion- 
ing irritation : it possesses, on the contrary, the property of al- 
laying vomiting, as in the case cited. 5th, that when employ- 
ed in intermittent fevers, with inflammatory complication, it 
cures the fever without augmenting the inflammation. Drs. 
Carminati and Palleta have employed it with the same suc- 
cess, and before them the physicians of Trevise, Ghirlanda, 
Lovadina, Mainer, Ciotic, Adami, &c. ; J. Zaneiti, pharmaceu- 
tist,-of the same city, was the first who pointed out the dis- 
tinction of this bark from ordinary cinchona.* 
In conclusion we may remark, that it has been supposed to 
be a kind of false angustufa ; if, by this, it is presumed to 
contain either brucia or strychnia, such a supposition is 
evidently erroneous. It may, however, have been confound- 
ed with ordinary angustura bark. In a collection of speci- 
mens placed at our disposal by a distinguished druggist of this 
city, is contained one of the bark in question, which is label- 
led Cinchona angustura. 
Philadelphia, April 1st. J. C. 
*Op. citat. 
