PHARMACOP@IAL VEGETABLE DRUGS. 
TEREBINTHINA RESINA 
Turpentine. Oil of Turpentine. Resin. 
The sticky juice of many trees, as the pine, the larch, and other 
coniferous trees, is known by the general name, turpentine, qualified 
by an adjective descriptive of its botanical origin or the country 
producing it; for example, Strasburg turpentine, Canada balsam, etc. 
This resinous, balsamic exudation has been used from all times as 
a balsam or pitch, or, when the wood of the tree is subjected to the 
action of heat, as a product of decomposition known as tar. ‘This 
writer (1906) observed a fragrant oleaginous tar brought into Smyrna 
in sheepskins from the interior of Asia Minor, which enjoyed a domestic 
popularity in that part of the country. The Indians of North America 
employed Canada balsam as an application to wounds, it being an 
excellent. antiseptic dressing for such purposes (see Indian Cap- 
tivities, Guiie’s Narrative (198). The distillate of the natural tur- 
pentine, had once a widely known domestic use in America as a 
remedy for worms, whilst the resin (rosin), which remains after the 
distillation of the spirit, is much employed in domestic treatment of 
the horse. All these forms of turpentine, as well as the empyrheumatic 
products of many related trees, have been known to the common peo- 
ple, as a rule, from the earliest records of history. The last issue of 
the Pharmacopeia of the United States, under the title Oleum Terebin- 
thine Rectificatum, directs that the spirit obtained from the distillation 
of turpentine, usually obtained from the Pinus australis, be purified 
by redistillation from a solution of sodium hydrate. 
THYMOL 
Thymol is a product of Thymus vulgaris, a native of Portugal. 
Spain, Southern France, Italy, and the mountainous parts of Greece. 
It has for several centuries been cultivated in England as a garden 
plant, and has long been known to yield a highly aromatic essential 
oil. Under the name camphor of thyme, an apothecary at the court 
of Berlin named Neumann, 1725, described this substance, which was 
called thymol by Lallemand (369a) in 1853, thus giving a name to 
a substance that, in little use in itself, had ever been valued in domestic 
medicine as well as by the medical profession in its natural association 
and combination as a part of oil of thyme. Under the name oil of ori- 
ganum, oil of thyme has been a popular product obtained by the distil- 
lation of this herb, being used as an ingredient in domestic liniments 
and in veterinary medicine. Its use by the medical profession is even 
yet much limited. 
TRAGACANTHA 
"This: gumm exudation (gum tragacanth) is a gift of Asia Minor, 
the shrub wa a it being very widely distributed. To locate exactly 
its first use would be to antedate historic records. It has ever been 
before the people in the cradle of humanity, where as a natural product 
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