ON PREPARATIONS OF IRON. 73 
ceptible of being formed into transparent tablets. This salt is 
soluble and very active; but as its taste is decidedly chalybeate, 
it perhaps cannot be employed internally. It is remarkable 
that its solution does not alter, but preserves its green color, 
although exposed to the prolonged action of the atmospheric 
air. 
Citrate of protoxide of iron and quinia. 
The citrate of iron and quinia is a new salt, which was 
needed in disease. This medicine is formed by the combina- 
tion of four parts of citrate of iron, with one part of citrate of 
quinia. It is obtained under the form of transparent plates, 
soluble, very bitter, and of a garnet hue. 
It is only in the form of pills that this salt can be used on 
account of its great bitterness. 
Chalybeate wine of quinquina. 
Composed of elements which were supposed incompatible, 
the chalybeate wine of quinquina constitutes a new w medicine, 
the necessity of which is frequently seen, and which, in the 
hands of physicians, receives numerous useful applications. 
Fifty grammes of this wine contains 1 gramme of citrate of 
iron and the soluble principle of 3 grammes of quinquina: the 
quantity may be increased at pleasure. 
Tannate of the sesquioxide of iron, 
Is obtained by adding a decoction of galls to a solution of 
a sesquisalt of iron. This tannate is blue, insoluble and with- 
out taste. Its properties are not very manifest. 
Syrup of tannate of iron. 
Jfc — Simple syrup, - 375 parts. 
Syrup of vinegar, - 125 " 
Citrate of magnetic oxide of iron, - 10 " 
Extract of galls, - 4 " 
Mixed and made into a syrup. 
Many physicians use the tannate of iron under the form of syrup. 
As the iron in this preparation is in the state of the magnetic 
vol. VII. — no. i. 10 
