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SELECTED ARTICLES. 
solution to separate the hydrochlorate of ammonia, there 
remained a brownish-red substance, of a bitter taste similar to 
quinia, very soluble in water and alcohol, insoluble in ether 
and fusible, like the green precipitate, by heat. The aqueous 
solution of this red matter is precipitated by the subacetate 
of lead, by the chloride of tin, but not by the salts of iron; 
this matter does not possess the characters of quinquina red. 
From the preceding statements it will be perceived that 
quinia is decomposed by an aqueous solution of chlorine, at 
ordinary temperatures; by treating the solution of decomposed 
quinia with ammonia, different substances are obtained, viz: 
1. A green substance, insoluble in water. 
2. A red substance, soluble in water. 
3. A brown substance, soluble in water. 
4. Finally, a green substance, soluble in water, but which 
we are unable to isolate, because it becomes changed by evapo- 
ration of the solutions, into the red and brown substances. 
In the interesting memoir of M. Pelletier, upon the action 
of chlorine upon the vegetable bases, this celebrated chemist 
comes to different results; but M. Pelletier caused the chlorine 
gas to act upon the quinia, and thus the results were not 
similar, a difference which I have also perceived. The reac- 
tion of chlorine in aqueous solution, at common temperatures, 
gives rise to several bodies of a determinate composition, as 
I think, and elementary analysis only, can elucidate the mode 
in which these different matters are formed. 
Journ. de Pharm. 
