Methys'Ticum Methysticum (Piper Methysticum), Ava (Kava-Kava). Sandwich Islands. Dried rhizome and roots; stimulant, diuretic, diaphoretic, tonic, has lilac odor, pungent, bitter taste; contains acrid resin 2 p. c, volatile oil, kavahin, methysticin (resembles piperine). Dose, gr. 15-30 (1-2 Gm.); fluidextract (60 p. c. alcohol); infusion yields upon fermentation the beverage kava; also used natively for vesical and urethral affections.
Ju'Glans Cine'Rea, Butternut. Juglandaceae. The dried, inner root-bark, collected in autumn, official 1820-1900; N. America (Canada, United States). Handsome tree, 9-15 M. (30-50°) high, branched, deliquescent; leaves imparipinnate, 5-9 pairs of leaflets; flowers - staminate and pistillate; fruit large drupe, oblong, 6 Cm. (2 2/5') long, hairy, viscid, green then brown; seed or kernel thick, oily, edible. Root-bark (liber), in pieces, 5 Mm. (1/5') thick, deprived of soft cork, deep brown, smoothish, striate, transverse fracture short, delicately checkered; this inner bark when first uncovered is pure white, but upon exposure immediately becomes lemon color, finally deep brown; contains nucin (juglone, juglandic acid), fixed oil 14 p. c... volatile oil, resin, tannin. Resembles rhubarb, but does not gripe - cathartic, tonic, rubefacient; costiveness, dysentery, with calomel in intermittent and remittent fevers. Dose, 3j-2 (4-8 Gm.); extract (alcohol), gr. 5-20 (.3-1.3 Gm.); fluidextract (glycerin 10, alc. 50, water 40); juglandin ("Eclectic" resinoid), gr. 3-10 (.2-.6 Gm.).
7. J. re'gia, English Walnut. - Persia, Himalayas, China, cultivated, Europe. Decoction of leaves used in leucorrhoea, meningitis; decoction of leaves, rind, or bark in checking mammary secretion, ulcers, diarrhoea, sore mouth, tonsils, uterine hemorrhages, carbuncles.
8. J. ni'gra, Black Walnut. - Bark styptic, acrid; used mostly in dyeing. The rind of green fruit removes ringworms, tetter, diphtheria. Decoction used as a vermifuge; spirit made by distilling fresh walnuts with alcohol; used in hysteric, cerebral, and pregnant vomiting. All of these fruits contain much fixed oil, which turns red with nitric acid, but brown with nitric and sulphuric acids.