Quassia

A tonic bitter. Dose, 1 or 2 dr., with a little ginger, in debility of the stomach. Its poisonous effects on insects and small animals suggest caution in its use.

Quicksilver

See Mercury.

Sulphate of Quinine

Tonic. Dose, 1/2 dr. to 1 dr. recommended by Mr. Morton in the prostration which follows influenza. But too expensive for general use. It is given to dogs in chorea, in doses of 2 to 5 gr.

Ragwort

The herb is said to produce a kind of lethargy or staggers in horses and cattle. Externally it is used as a poultice in quinsy.

Raking

Removing hardened faeces from the lower bowel by the hand.

Ranunculus repens

Acrid stimulant. It is poisonous to sheep.

Reed

The great reed (Arundo donax), and the Bankside reed {Arundo phragmitis), are reputed diuretic. The former is supposed to have the property of diminishing the secretion of the milk.

Refeigerants

Cooling Medicines. See Temperants.

Resin or Rosin

Diuretic. 1/2 oz. to 1 oz. may be given daily to horses in their corn, for swelled legs. The yellow or amber resin is preferable. Externally it is adhesive and gently stimulating; and is a common ingredient in digestive ointments, and in plasters and charges.

Rhododendron

Supposed to be useful in the rheumatism of cattle. Dose, 1/2 to 1 oz., boiled in water.

Rhubarb

Tonic and stomachic. Scarcely laxative to large animals. From 1/2 to 1 oz. is given in jaundice, to horses and cattle. On dogs it acts as a purgative, but an uncertain one, in doses of 1/2 dr. to 1 dr.

Rosemary

A mild stimulant and carminative. The essential oil is chiefly used in warm liniments and ointments; but is sometimes given in doses of 1/2 dr. to 1 or 2 dr. in colic.

Rue

Stimulant, uterine, antispasmodic, and vermifuge. It is also supposed to resist contagion and poisons. A - decoction or infusion of 2 to 4 oz. of the fresh herb in water or beer is given for worms; as an antidote to the bite of vipers; with diuretics in farcy; with box leaves as a preventive of hydrophobia; and with camphor and opium in locked-jaw. The bruised leaves are put into horses' ears for the staggers. It is given to poultry for the cure of roup. Externally, rue is used in fomentations as a stimulant, antiseptic, and discutient.

Saffron

Cordial, antispasmodic, and uterine; but too weak and expensive for veterinary use.

Sage

Stimulant and tonic. In habitual relaxation of the bowels. The powder may be given in a ball, or the herb infused. The infusion is used as a mouth-wash.

Sago

Nutritive and demulcent. Used in the form of gruel.

St. John's Wort

Vulnerary. The flowers were formerly an ingredient in Fryar's Balsam, and other similar compounds. An infused oil of the plant is sometimes used in liniments.

Sal Ammoniac

See Muriate of Ammonia.

Sal Prunella

Fused Nitre. Its uses and doses are the same as nitre.

Salicin

Tonic. Dose, 10 to 30 gr.

Common, or Culinary Salt

In small doses it is tone, digestive, and alterative; in large doses purgative and vermifuge. As a digestive, 1 oz. may be sprinkled on the horse's corn. As a purgative, or to expel worms, the dose may be from 4 to 6 oz. It is also a common ingredient in laxative clysters. For cattle, an ounce or more may be sprinkled on the hay, to assist digestion; as a purgative 4 to 8 oz. may be given, but it is not suitable in inflammatory or febrile diseases. Sheep require 2 oz. as a purgative; or smaller doses daily as a preventive of the rot. To dogs, a teaspoonful or one and a half teaspoonfuls will act as an emetic; smaller doses as a vermifuge. Half a teaspoonful of a solution of salt, as strong as it can be made, is given to poultry as an emetic in roup. Externally, salt dissolved in water is used as a discutient, as a stimulant to old strains, and as a collyrium in chronic ophthalmia.