564> Preparations and Compositions. Part III.

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Spiritus camphoratus. Dub.Camphorated Spirit.Take of

Camphor, one ounce;

Rectified spirit of wine, eight ounces, by measure.Mix so as to dissolve the camphor.

These solutions of camphor are only employed for exter-nal uses, against rheumatic pains, paralytic numbnesses, in-flammations, for discussing tumours, preventing gangrenes,or restraining their progress. They are too pungent to beexhibited internally, and cannot be diluted with water, with-out being totally decomposed.

TlNCTURA CASCARIIX.E. Lotld. Dub.

Tincture of Cascarilla.Take of

The bark of cascarilla, powdered, four ounces;

Proof-spirit, two pints.Digest for seven days, Dub. (macerate for fourteen days,

Lond.J, and strain.

The proportion of alcohol is here so large, as indeed it isin most of the tinctures of this kind, that it is merely to beconsidered as a concealed dram.

TlNCTURA CASTOREI. lotul. Dub.

Tincture of Castor.Take of

Russian castor, powdered, two ounces;

Proof-spirit, two pints.Digest (macerate, Lond.) for seven days, and strain.

Ed.Take of

Russian castor, an ounce and a half;

Alcohol, one pound.Digest for seven days, and strain through paper.

It has been disputed, whether a weak or rectified spirit,and whether cold or warm digestion, are preferable for ma-king this tincture; but, from experiment, it appears that cas-tor, macerated without heat, gives out its finer and mostgrateful parts to either spirit, but most perfectly to the recti-fied : that heat enables both to extract the greatest part of its