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654

Preparations and Compositions. Part III.

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Rub the mercury carefully in a mortar with a little of thehogs lard, until the globules entirely disappear; then addthe rest of the fats.

This ointment may also be made with double or triple thequantity of quicksilver.

Dub.Take of

Purified quicksilver,

Prepared hogs lard, equal weights.Triturate them together in a marble or iron mortar, until the

globules of quicksilver disappear.

Unguentum hydrargyri mitius. Dub.Milder Ointment of Ouicksilver,Is made with twice the quantity of lard.

Unguentum hydrargyri fortius. Lond.Stronger Mercurial Ointment.Take of

Purified quicksilver, two pounds;Prepared hogs lard, twenty-three ounces;Prepared mutton suet, one ounce.First triturate the quicksilver with the suet and a little of thehogs lard, until the globules be extinguished; then addthe rest of the lard, and mix.

Unguentum hydrargyri mitius. Lond.Milder Mercurial Ointment.Take of

The stronger ointment of quicksilver, one pound ;Hogs lard, prepared, two pounds.Mix them.

Linimentum hydrargyri. Lond,Liniment of Mercury.

Take of

Stronger mercurial ointment,Prepared lard, of each four ounces ;Camphor, one ounce;Rectified spirit, fifteen minims ;Water of ammonia, four fluidounces.

First rub the camphor with the spirit, then with the lard andmercurial ointment, lastly, having gradually added the wa-ter of ammonia, mix all the ingredients together.