The hydrate of the diatomic alcohol terpin.

Properties : Terpin hydrate occurs as colorless, lustrous, rhombic prisms, nearly odorless, and having a slightly aromatic and somewhat bitter taste. It is slightly soluble in water (1:200) and freely soluble in alcohol (1:10).

Action and Uses: Terpin hydrate is antiseptic, diaphoretic and diuretic. It is largely used as an expectorant in cases accompanied by free bronchial secretion.

Dosage: 0.125 gm. or 2 grains. Terpin hydrate may be administered in the form of powder or in capsules. As a solution, usually in the form of elixir, it requires an excessive amount of alcohol.

Tetanus Antitoxin.

See Under Serum Antitetanicum.