TIGL

439

Testae Pueparatve. L. Prepared Oyster Shells. Free the shells fromextraneous matter, wash them with boiling water, and prepare themin the manner directed for chalk.Medicinally they are antacid and absorbent, in gr. x to ^ij, but are inalmost no respect different from chalk, and are not worth the troubleof preparing when chalk can be had.

Teucrium. A genus of plants, all of which are bitter and stomachic,such as the Teucrium Crelicum. P. Teucrium monlanum. P. Teu-crium chamwdrys, &c. See Marum.

Thalictrum. Meadow Rue. The root is purgative, and is used toadulterate powdered rhubarb.

Thea Boh;e. P. Bohea Tea. The dried leaves are aromatic, feeblyastringent, stimulant, tonic, and nervine. The fresh leaves are nar-cotic. The debilitating effects of tea is a popular error; the contraryis true.

Thea Viridis. Green Tea, Hyson, &c. It has similar properties withthe preceding, but acts more on the nerves, and in some constitutionscauses head-ache, nervous irritability, and sleeplessness. It sometimescures slight head-aches.

Theriaca, and Theriacum. See Mithridate.

Thlaspi. P. A genus of plants which are astringent and subacrid, butare little used.

Thomson's Heal Cheltenham Salts. See Cheltenham.

Thornapple. See Stramonium.

Thridace. New. See Lactucarium.

Thrush Mixture, in Farriery. Mix giv of liquid tar with xjss ofsulphuric acid. (Pharm. Veterinary College.)

Thymus Serpyllum. P. Wild Thyme. The flowering tops are aro-matic and astringent, stimulant, tonic, and nervine. The Thymusvulgaris. P., or Garden Thyme, is used for making the oil, and as apotherb.

Tiglii Lignum et Semina. P. The Wood and Seeds of the Crotontiglium. Powerfully drastico-cathartic, emetic, diuretic, and escha-rotic. The seeds have long been known under the names of Granamolucca, Tiglii grana, or Grains of Tilly. Their violent operationbrought them into discredit as a medicine.

Tiglii Oleum. L. D. Croton Oil. Expressed from the seeds of theCroton tiglium, A native of Ceylon and the Molucca Islands. Thispowerful medicine was lately re-introduced by Mr. Conwell, of theMadras Establishment, and his friend, Mr. Short, of Ratcliff High-way, London. As the oil which is imported is very various in qua-lity, either from adulteration, or careless preparation, it ought to bemade in this country from the seeds, according to the method pro-