456

TUTI

Medicinally they are cooling in dryness of the fauces, fever and sorethroat, and for public speakers and singers.

Trotter Oil, or Neat's-foot Oil, may be purchased ready made of thebutchers, but it is very impure, and ought to be simmered with equalparts of rose water over a fire stirred with a wooden spatula, and whencool, to be taken off with an oil spoon; and, if necessary, the processrepeated. It is excellent for making cold cream and other ointments.Dr. Dods says, alkanet root added makes it keep better.

Tuberose. Polyanthus tuberosa. A fragrant plant, the root of whichis emetic, and probably contains emetine or violine.

Tungstic Acid is separated in the form of a yellow powder, by treatingtungstate of lime finely levigated with nitric acid.

Tuupeth Mineral. Sulphate of Peroxide of Mercury. Subsulphashydrargyri jlavus, E., which see.

Turner's Cerate. See Ceratum Calamine.

Turmeric. The root of Curcuma longa, and Curcuma rotunda, thepowder of which is sometimes employed as a stimulant aromatic tonic,in doses of 5J to Jij; but it is chiefly used for its yellow colour.Adulterated in the powdered form with raspings of guaiac wood,bean meal, &c.

Turnsal. Another name for Litmus, which see.

Turpentine. See Terebinth.

Turpentine Liniment, in Farriery. Mix Oj each of oil of turpentineand olive oil. (Pharm. Vet. Coll.)

Turpentine Ointment, in Farriery. Take ftj of common turpen-tine, Ibij of lard, melt together. In summer, use tallow for the lard,or one-fourth oil with tallow in winter. (Pharm. Vet. Coll.)

Turpeth. Convolvulus turpethum. P. An acrid cathartic herb. Seealso Subsulph. Hydrarg. Flav. and Hydrarg. Oxyd. Sulphur.

Tussilago. L. E. D. P. Coltsfoot. Tussilago farfara. A nativeplant, common in barren, sandy soils. The leaves and flowers havebeen long in repute as a demulcent and expectorant in coughs; butit has no virtue beyond that of a pleasant mucilage. A decoction ismade by boiling a handful of the leaves in a quart of water, downto a pint.Medicinally the expressed juice was recommended by Cullen forscrofula. It is used for smoking like tobacco.

Tussilago Petasites. P. Butter Burr. A native plant, with verybroad round leaves, common on the sandy banks of rivers. It is aweak, bitter, and mucilaginous demulcent.

Tutia. Tutty. See Zincum and Oxydum Zinc. Impur. Pr&;p.