374 A COMPENDIUM OF 
and a burning, penetrating, bitter taste; specific 
gravity, between 0,85 and 0.87; boils at 300° F., 
and is very inflammable; only slighly soluble in 
water and not freely so in alcohol. When per- 
fectly pure the turpentine is strictly a hy- 
drocarbon, but as found in commerce it con- 
tains oxygen. The oil forms with water terpi- 
nal, terpine, or terpene, and terpene hydrate, 
all of which are necessarily hydrates. The lat- 
ter hydrate crystallizes under the action of acid 
nitric. Two artificial camphors are formed by 
the action of hydrochloric acid gas. By the ap- 
plication of intense heat in a sealed tube, tur- 
pentine is converted into a substance called iso- 
terebenthene, which has the odor of the lemon 
oil. Turpentine o7/ is a stimulant, diuretic, an- 
thelmintic, and cathartic, and externally rube- 
facient. Dose from 5 to 30 drops (0.3 to 2.0 
grams) in form of emulsion or capsule. Tur- 
pentine is an ingredient in several officinal lini- 
ments, ointments, and confections. (See Dis- 
pensatory). Rotates the plane of light to the 
right (dextrogyre) whilst the French Oil is lev- 
ogyre. 
Oleum Thymi, Thyme, Oleum Origani, Or- 
igani, Origanum Oil, Distilled from the entire 
plant, the Thymus Vulgaris.—Natural order 
Labiatez. This volatile oil is prepared in the 
south of France, and the first distillated is known 
as the red oil, or Oil of Origanum of commerce; 
the second distillation is known as the white 
oil, or true refined Thyme Oil. This product 
is a thin liquid of a pale yellow color, becoming 
thicker and darker by age and exposure, having 
the odor of the herb and a warm, pungent taste; 
