658

Preparations and Compositions. Part III.

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UNGUENTUM SUPERNITRATIS HYDRARGYRI. Dub.

Ointment of Supernitrate of Quicksilver.Take of

Distilled quicksilver, one ounce;

Nitrous acid, by weight, two ounces;

Olive oil, one pint;

Prepared hogs lard, four ounces.Dissolve the quic ksilver in the acid •, mix the solution with the

oil and lard, melted together, and make into an ointment,

in the same manner as the ointment of nitrous acid.

Unguentum hydrargyri njtratis. Lond.Ointment of'Nitrate of' Quicksilver.Take of

Purified quicksilver, one ounce;

Nitric acid, eleven tluidr ahms;

Prepared hogs lard, six ounces ;

Olive oil, four fluidounces.First dissolve the quicksilver in the acid, and then mix the

solution, while hot, with the lard and oil previously melted

together.

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Unguentum nitratishydrargyri fortius; vulgo Un-guentum UiRlNlM. Ed.Stranger Ointment of Nitrate of Quicksilver, commonly called

Citrine Ocnttuettt.Take of

Purified quicksilver, one part;Nitrous acid, two | .arts;Olive oil, nine parts ;Hogs lard, three parts.Dissolve the quicksilver in the acid ; then beat up the solu-tion in a glass mortar, with the lard and oil when gettingstiff, after having been melted together, until an ointmentbe formed.

Unguentum nitratis hydrargyri mitius. Ed.Milder Ointment qfNitratt of Quicksilver.This is prepared in the same way (a* the Ointment of nitrateof quicksilver), with three times the quantity of oil and hogslard.

This ointment, when prepared with lard alone, soon be-comes so very hard, that it is necesf<arj to mix it with freshaxunge before it can be used. The substitution of the oil for