648 Preparations and Compositions. Part III.

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Yellow wax, half a pound ;Prepared hogs lard, two pounds.Boil the savine leaves with the lard and wax melted together,and express through linen.

This is an excellent issue ointment, being in many re-spects preferable to those of cantharides. If fresh leaves arenot to be had, it may be made by mixing the dried leavesfinely powdered, with any ointment of proper consistency.

Emplastrum oxidi plumbi semivitrei ; olim Emplastrum

COMMUNE. Ed.

Plaster of the Semi-vitrified Oxide of Lead, formerly Common

Plaster.Take of

Semi-vitrified oxide of lead, one part;

Olive oil, two parts.Boil them, adding water, and constantly stirring the mixture

till the oil and oxide be formed into a plaster.

Emplastrum lithargyri. Dub.Litharge Plaster.Take of

Litharge, in very fine powder, five pounds;

Olive oil, nine pounds;

Boiling water, two pints.Mix them at a high temperature, (200° to 212°), constantly

stirring until the oil and litharge unite, so as to form a

plaster, occasionally supplying the waste of the water with

fresh additions.

Emplastrum plumbi. Lond.Lead Plaster.Take of

Semi-vitrified oxide of lead in very fine powder, five

pounds;Olive oil, one gallon ;Water, two pints.Boil together with a slow fire, constantly stirring them, untilthe oil and oxide of lead acquire by their union the thick-ness of a plaster. But it will be necessary to add a littlemore boiling water, if that employed at first be almost allconsumed before the end of the operation.

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