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SELECTED ARTICLES. 
of tanghin in the juice of banana. The panazon doha (he 
who pronounces the imprecation,) places his hand upon the 
head of the accused, and pronounces the formula of impreca- 
tion, invoking all kinds of evil upon him if he be culpable. 
Shortly after, a large quantity of rice-water is administered; 
the necessary effect is vomiting; and if, upon examination, the 
three pieces of skin are found, all is well, the individual is 
legally acquitted; but if it be otherwise, the crime has pro- 
duced its stain, which to him is irreparable. When the 
accusation is serious, the potion is so concentrated that the 
arraigned person often loses his life. 
The tanghin must be a very active poison, since it produces 
its effects even after the stomach is filled with aliment, and 
the administration of a large quantity of rice-water. 
J. de F. 
Journ. de Chimie Med. 
ART. VII. — ON THE REACTION BETWEEN QUINIA AND 
AN AQUEOUS SOLUTION OF CHLORINE AND CAlISTC 
AMMONIA. By Rudolph Brandes. 
It is some years since the remarkable reaction between 
quinia and chlorine with ammonia has been made known. 
This reaction consists in the coloring of the solution of a very 
intense emerald green. But the production of this color de- 
pends upon certain proportions of these substances being used. 
I attempted to determine these proportions, and have arrived 
at the following results: — Half of a grain of sulphate of quinia 
in an ounce of water, on being mixed with 16 to 20 drops of 
an aqueous solution of chlorine, and then 16 to 20 drops of 
an aqueous solution of ammonia added, gave a green flocculent 
precipitate. Half a grain of sulphate of quinia in an ounce of 
water, mixed with 60 to 100 drops of the solution of chlorine 
and 10 drops of ammonia gave, also a solution of a very in- 
