from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A type of purgative drug made from the root of a type of morning glory plant, Operculina turpethum; or the plant itself.
from the GNU version of the Collaborative International Dictionary of English
- n. See turpeth.
from The Century Dictionary and Cyclopedia
- n. Same as turpeth.
[Footnote 433: Most likely turmeric, anciently called turbith vegetable, in contradistinction to turbith mineral, so named from its yellow colour resembling turbith or turmeric.
Faetida, de quinque generibus mirabolanorum, &c. More proper to melancholy, not excluding in the meantime, turbith, manna, rhubarb, agaric, elescophe, &c. which are not so proper to this humour.
The organ was indeed the strangest that ever eyes beheld; for the pipes were of cassia fistula in the cod; the top and cornice of guiacum; the bellows of rhubarb; the pedas of turbith, and the clavier or keys of scammony.
Strange preparations have been offered as pigments, and sometimes accepted, witness turbith mineral, iodine yellow, &c. In these days of chemistry there is less chance for them, but they are continually submitted to one's notice, their merits being enlarged upon in proportion to their worthlessness.
The Saxon mineralogifts aflerf, that it does not contain any tin. — 'The only experiment I jnade with it/fays the Author, * was to digeft it in a powdered ftate with acids, by which means it acquires a rich yellow' colour, like turbith mineral: the acid of fall anfwers beft for this experiment.
This metal has an attraction for the vitriolic acid, and when joined to it appears under the form of turbith mineral: but this attraction is weaker than that of the fixed alkali for the same acid; for if we mix a dissolved salt of tartar with turbith mineral, the turbith is converted into a brown powder, and the alkali into vitriolated tartar; which change happens the sooner, if the pure or caustic alkali is used.
Yet, if to a compound of quick-silver and the nitrous acid, we add a compound of the fixed alkali and the vitriolic acid, or a vitriolated tartar, and digest the mixture with a strong heat, the vitriolic acid does not remain with the alkali, but is joined to the quick-silver which it attracts more weakly, composing with it a turbith mineral; while the alkali is joined to the nitrous acid which it likeways attracts more weakly than it does the vitriolic, and is converted into salt-petre.
This afternoon took a Vomit of Tartar Emet. and Turbith mineral, [Turpeth, turbith: "A cathartic drug prepared from the root of