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Tela Aranearum. Spider's Web, Cobweb. Externally it is a goodstyptic, by preventing the flow of blood, and promoting a coagulum.Medicinally it is tonic and febrifuge, and has lately been given inAmerica in several disorders, particularly intermittents, in doses ofgr. x, or more, in form of pill. The webs of the house and cellar-spiders, Aranea domestica, Linn., and Segestrla cellaria, La-treille, are said to be the most powerful.

Tbrebinthina Argentoratensis. P. Strasburgh Turpentine. Odourfine, taste bitter, and subacrid.

Terebinthina Canadensis. L. Canadian Turpentine. BahamianCanadense. P. Resina liquida pinus balsamea. E. D. It is com-posed of resin and volatile oil, is fragrant, bitter, and slightly pun-gent, or rather warm to the taste.

Medicinally it is stimulant, laxative, and diaphoretic in doses of 3j to5jss, thrice a day, for gonorrhoea, leucorrhoea, and herpetic eruptions,but is seldom prescribed. It is chiefly used for making varnishes.Terebinthina Chia. L. P. Cyprus Turpentine. Resina liquida:Pistachio; lerebinthtni. D. A native of Barbary, and the south ofEurope. It is fragrant, but less acrid and bitter than the otherturpentines. It is often adulterated, but may be known by its pel-lucid bluish-green colour.

Medicinally it has similar properties to other turpentines.Terebinthina Veneta. E. P. Venice Turpentine. Procured fromthe Abies larix. Resina liquida: Pini laricis. D. Has a strongunpleasant smell, and a hot, bitter taste. It is more liquid than theothers, and is of a pale yellow.

Contains a large quantity of volatile oil; and oil less volatile; pinicacid or resin; another resin which does not combine with alkalies oroxides; a little succinic acid; and a bitter extract. (Unverdorben.)

It is used to adulterate the Chio turpentine, to which it is inferior.

Medicinally it is more diuretic and laxative than the preceding.Terebinthina Vulgaris. L. E. D. P. Common Turpentine, theliquid resin of the Pinus sylvestris, or Scotch Fir. This sort shouldbe used only externally, as being too coarse and strong for internaluse. As a stimulant, it enters into some ointments.

Internally it is substituted frequently for the Chio and Canadian, but isvery inferior. In form of enema, Jss to ^j may be used; or in formof pill with liquorice powder, gr. x to Jj ; or with yolk of egg orgum arabic, in form of emulsion—for gonorrhoea and leucorrhoea,but it is apt to irritate the kidneys.

Enters into 01. Terebinthina?. D.Terebinthina Oleum Rectificatum. L. D. P. Rectified Oil ofPurpentime, Spirit of Turpentine. Oleum volatile pint purissimi. E.