Unguentum Hydrargyri Nitratis. L.E.D. vulgo Citrine Ointment. It is stimulant, detergent, and alterative; when diluted with an equal quantity of simple ointment or almond oil, it may be almost regarded as a specific in ophthalmia tarsi, smeared upon the cilia every night at bedtime.
Unguentum Hydrargyri Nitrico-oxydi. L. An excellent stimulant application, well adapted for giving energy to indolent ulcers. If mixed with any ointment containing resin, it loses its red colour, passing through olive green to black, which depends upon the conversion of the red into the black oxide of mercury.
Unguentum Hydrargyri Præcipitati Albi. L. Stimulant and detergent. It is said to be very efficacious in certain inveterate forms of the Itch. With the addition of Carbonate of Potass, it has been much extolled in various cutaneous affections.[[717]]
Unguentum Picis Liquidæ. L.E.D. Tar Ointment. This ointment has been much extolled for the removal of tetter, and for the cure of tinea capitis.
Unguentum Resinæ Nigræ. L. olim, Ung. Basilicum[[718]] nigrum. Digestive stimulant.
Unguentum Sambuci. L.D. It possesses no advantage over the simple ointment.
Unguentum Sulphuris. L.E.D. This ointment is a mechanical mixture of Lard and Sulphur, although it would appear that a small proportion of the latter exists also in a state of chemical combination. Med. Uses. A specific in the itch. Dr. Bateman proposes a combination, equally efficacious, but which has not the same disagreeable smell; viz. “Take of sub-carbonate of potass, half an ounce; rose water, one ounce; red sulphuret of mercury, one drachm; essential oil of Bergamot, half a fluid-drachm; sublimed sulphur, hog’s lard, of each eleven ounces. Mix them.” Jasser’s Ointment also, as altered in the Prussian Pharmacopœia, is an excellent application in Psora, viz. ℞.Sulphur: Sublim: ℥ij, Zinci Sulphat: ℥ij, Ol: Lauri, et Axung. q, s, ut fiat Unguentum.
Unguentum Sulphuris Compositum. L. More stimulating than the simple ointment, from the addition of white hellebore; it is however frequently found to excite too much irritation.
Unguentum Veratri. L.D. It is used for the cure of scabies, but is less certain than the ointment of sulphur.
Unguentum Zinci. L.E.D. Astringent and stimulant; very beneficial in some species of ophthalmia, smeared upon the tarsi, every night.