1152

ELEMENTS OF MATERIA MEDICA.

bulk to active and heavy powders; as calomel, emetic tartar, &c-> </r

the preparation of lozenges. The latter is employed to suspend Jluble powders (as oxide of zinc, musk, &c.) in water, or to difft ,s0 Jjand resinous substances through aqueous fluids, and to give fa 11111tenacity to pills. Furthermore, the adhesive qualities of mucila£ eders it exceedingly useful for various other pharmaceutical purposes- ^

Administration. —The dose of powdered gum is from 3 ss. to 3j->ad libitum. . p,

1 . Mistuba Acacije,L. Mucilage, F. Mucilago Gummi Aram&i ^

(Acacia powdered, sx.; Boiling Water , Oj. Hub the Acacia "hwater gradually poured in, and dissolve it, L.—The Edinburgh | jCuses only Six. of Gum to Oj. of Cold Water, and directs the gi ' 111 [ ()

dissolved without heat, but with occasional stirring, and the solufl

be strained through linen or calico.—The Dublin College employscoarsely-powdered Gum to fSiv. of Hot Water, and directs theto be strained through linen).—The process of the Edinburgh G°is to be preferred, as being sufficiently strong, and made without y(which causes gum to become somewhat acid, and thereby reno ^somewhat acrid). The Dublin process yields a mucilage too thickstrained. By keeping, mucilage readily becomes sour by the ^ e 'y ee nment of acetic acid. The pharmaceutical uses of mucilage have gabove referred to. To render different substances miscible with af ff' C rC .vehicles, different proportions of mucilage arc required. “ Oils y 1 jquire about three-fourths of their weight, balsams and spermaceti eparts, resins two parts, and musk five times its weight” (Montg 011Observ. on the Dubl. Pharm.) I u ;

2 . Mistura Acacias, E. (Mucilage, fgiij.; Sweet Amonds,5j- aI j c 3 J e ]Pure Sugar, 5 V.; Water, Oij. Steep the aimonds in hot water, an<them ; beat them to a smooth pulp in an earthenware or marble 11,0first with the sugar, and then with the mucilage; add the water » j_dually, stirring constantly; then strain through linen or calico).—

SW 1

cent and emollient. Applicable to the same purposes asAmygdala (see p. 1109). Dose, fsj. to f*ij.

3. Trociiisci Acacije, E. Gum Lozenges. (Gum Arabic, jiv- > ~ t0 35 ].; Pure Sugar, lbj. Mix and pulverize them, and make them c .proper mass with rose-water for forming lozenges). An agreeab f j, e storal. Employed to allay the tickling in the throat, which p r0 'coughing.

Aca’cia Cat'echu, Willdenow , L. E. D.— The Catechu Acad a -

Mimo'sa Cat'echu, Linn.

Sex. Syst . Polygamia , Moncecia.

(Ligni extractum, /-.—Extract of the Wood, E .—Extractum ex ligno, D.)

History. —It is somewhat uncertain w ho first describedGarcias ab Orto ( Clusii Exot. lib. i. cap. x. p. 163) was of °P^ l 0 jjoyl eit was the A vkiov Iv^ucof of Dioscorides (lib. i. cap. 132): but V ■ 0 n{Linn. Trans, vol. xvii. p. 83), in a very elaborate and Earned pal ^ bythis subject, has apparently proved that the preparation referrthe latter author is the produce of Berberis Lycium, Royle.

Botany. Gen. Ciiar .—See Acacia (p. 1146). o(

Sp. Char. —Arboreous. Branches armed with stipulary t 0 ’