Chap. XXXVI. Of Powders.

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it is immaterial whether the phosphate or carbonate of limebe used to facilitate its mechanical division.

PULVIS SCAMMONE-ffi COMPOSITUS. Lond.

Compound Powder of Scammony.Take of

Scammony,

Hard extract of jalap, of each two ounces;Ginger, half an ounce.Reduce them separately, to a very fine powder, and mix

them.

Purvis SCAMMONU. Ed.Powder of Scammony.Take ofScammony,

Supertartrate of potass, equal parts.Rub them together to a very fine powder.

In the first of these compositions, the scammony is com-bined with another purgative little less active than itself, andin the other with one much less so; which difference must beattended to in prescription. The ginger is an useful addi-tion, and will render it less apt to gripe.

Pulvis sennjE compositus. land.Compound Powder of Senna.Take of

Senna leaves,

Supertartrate of potass, of each two ounces ;Scammony, half an ounce ;Ginger, two drachms.Triturate the scammony by itself, reduce the rest together in-to a very fine powder, and then mix.

This powder is given as a cathartic, in the dose of twoscruples, or a drachm. The scammony is used as a stimulusto the senna; the quantity of the latter necessary for a dose,when not assisted by some more powerful substance, beingtoo bulky to be conveniently taken in this form. The gingeris added to make it sit easier on the stomach, and gripe less.

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