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.

[Illustration: Fig. 140.
Dogwood.]

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.

[Illustration: Fig. 141.
Golden Seal. ]

GOLDEN SEAL (_Hydrastis Canadensis_). Golden Seal is a powerful and most
valuable tonic. It is a valuable local remedy when used as a general
injection in leucorrhea. _Dose_--Of the powder, from ten to thirty
grains; of the tincture, from one-half to one fluid drachm; of the fluid
extract, from ten to twenty drops; of the concentrated principle,
Hydrastin, from two to three grains; of the muriate of hydrastia, from
one-half to one grain.

[Illustration: Fig. 142.
American Colombo. ]

AMERICAN COLOMBO (_Frasera Carolinensis_). American Colombo is a simple
tonic. _Dose_--Of the powdered root, from ten to fifteen grains; of the
infusion one-half to one fluid ounce, three or four times a day; of the
active principle, Fraserin, one to three grains.

[Illustration: Fig. 143.
Gold Thread. ]

GOLD THREAD (_Coptis Trifolia_). Gold Thread is a pure and powerful,
bitter tonic, and is also efficacious as a wash for sore mouth or as a
gargle. _Dose_--Of the decoction, from two to six fluid drachms; of the
tincture, from one-half to two teaspoonfuls; of fluid extract, from ten
to twenty drops.

IRON (_Ferrum_). Different preparations of iron are frequently
prescribed by physicians. They are particularly valuable in anaemic