White Poplar (Liriodendron Tulipfera), called also American Poplar, or White Wood. The part used is the inner bark. This is a mild but valuable tonic for domestic use. Dose—Of the infusion, from one-half to one ounce; of tincture, from one to two teaspoonfuls.
Chamomile (Anthemis Nobilis). The part used is the flowers. This is a mild, unirritating tonic. Dose—Of infusion (one-fourth ounce of flowers to a pint of water) one-half to one ounce.
Gentian (Gentiana Lutead). The root is the part used. This is a favorite domestic tonic in many localities. Dose—Of powdered root, five to ten grains; of the tincture, ten to twenty drops; of the fluid extract, five to ten drops, four or five times a day.
Nux Vomica (Strychnos Nux Vomica), or Dog Button. This is a powerful tonic. It increases innervation and is particularly valuable in cases marked by feeble circulation and general impairment of muscular power. In overdoses it is poisonous, and hence must be employed with much caution. Dose—Of the tincture, three to five drops; of the fluid extract, one to three drops.
Willow (Salix Alba). Willow is a tonic and an astringent. Dose—Of the decoction, from one to two fluid ounces; of the concentrated principle, Salicin, from two to four grains.
Dogwood (Cornus Florida). Dogwood, also known Boxwood, is tonic, astringent, and slightly stimulant. Dose—Of the solid extract, from three to five grains; of the infusion, from one to two ounces; of the fluid extract, from ten to twenty drops.
Wafer-ash (Ptelea Trifoliata), also called Swamp Dogwood. The bark is used. This is a pure, unirritating tonic. Dose—Of tincture, one-half to one teaspoonful; of fluid extract ten to twenty drops; of the infusion, one to two fluid ounces.
