Chap. XLI. Of Liniments, §c.

Spanish flies, in powder, an ounce.Make into an ointment.

64,5

CERATUM JLYTTiE. LoTld,

Cerate of Cantharides.Take of

Cerate of spermaceti, six drachms ;

Spanish flies, in very fine powder, one drachm.Add the flies to the cerate, softened over the fire, and mix.

This ointment is employed in the dressing for blisters, in-tended to be made perpetual, as they are called, or to be keptrunning for a considerable time, which, in many chronic, andsome acute cases, is of great service. Particular care shouldbe taken, that the cantharides employed in these compositionsbe reduced into very subtile powder, and that the mixturesbe made as equal and uniform as possible.

EMPLASTRUM LYTTiE. Lond.

Piaster of Spanish Mies.Take of

Spanish flies, in very fine powder, one pound ;

Wax plaster, one pound and a half;

Prepared hogs lard, one pound.Having melted the plaster and lard together, and removed

them from the fire, sprinkle in the flies, a little before they

become firm, and mix the whole together.

Emplastrum cantharidis. Dud.Plaster of Spanish Flies.

Take of

Purified yellow wax,Mutton suet, each one pound;Yellow resin, four ounces ;Cantharides, in fine powder, one pound.

To the wax, suet, and resin melted together, a little beforethey stiffen, on being allowed to cool, mix in the canthari-des, and form an ointment.

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