Hospital Sulphate of Quinine.—Mr. Edward Herring has introduced
a preparation under this name, consisting of disulphate of quinine only
partially purified. In its medicinal properties it is said to differ but
little from the ordinary disulphate. It has a brownish color, and is of
course not admissible as a substitute for disulphate of quinine in gene-
ral dispensing, but it has been tried in hospitals and dispensaries, and by
some medical men who dispense their own medicines. The preparation
is recommended on account of its economy. The final purification and
decolorization of the salt being attended with some expense, the manu-
facturer is enabled to offer it in a partially purified state at a considerable
reduction from the price at which it can be sold when purified in the
usual way. The amount of impurity must be ascertained before its real
value can be estimated. It may be a question whether the recognition
of a preparation so imperfectly purified might not open the door to some
abuse.—Ibid.