This is a mild and good laxative; particularly suitable for piles, and for those persons who are often troubled with colic. Dose, a teaspoonful; in molasses or milk. In recent cases of skin-disease, it is often given with an equal quantity of cream of tartar.

Externally, sulphur is the specific remedy for itch ; not the only one, but the most convenient and frequently used. It is applied in the form of ointment, rubbed well into the seat of the eruption, where it kills the acarus or itch-mite, which keeps up the disease.

Sulphur, when burned, gives off fumes of sulphurous acid, which is a potent disinfectant. A pound or two of it burned in a large room (with all the people out of it, of course, as the gas cannot be breathed), with the. doors and windows closed for two or three hours, will do more to purify it of any contagion or infection than anything else that can be done.

Sulphuric acid, in its pure state, is not used in medicine. Aromatic sulphuric acid is the elixir of vitriol. This is a good appetizer in ten- or twelve-drop doses, in water. It is also sometimes given for diarrhoea; and has some reputation as one of the remedies for epidemic cholera. A drink made of it is recommended to workers in lead or lead paint, to prevent the poisonous action of that metal; as the sulphate of lead (compound of lead with sulphuric acid)

Is insoluble in water, and without much if any poisonous influence upon the body.

Suppositories are small, soft solids, made for introduction into the lower bowel. Brown soap is sometimes so used instead of an opening injection (enema). A piece of it or of castile soap may be cut of about the size and shape of the last joint of the little finger, and dipped in oil (castor-oil or sweet-oil) for easy introduction. It must be pressed upwards gently until fully within the bowel, and retained for a little while by the contraction of the muscle at the outlet {sphincter ani muscle of anatomists).

Cocoa Butter is a very common and convenient material for suppositories, with which are mixed medicinal agents so to be used. Opium may be employed, the dose being twice as large as when taken by the mouth. A suppository may therefore contain two grains of opium. Santonin suppositories (with three grains of this drug in each) may be used with great advantage for seat-worms.

Tannin or Tannic Acid - This is the astringent principle of oak bark, of nut galls, and of many other vegetable materials. Its presence in tea-leaves accounts for iron spoons being blackened when left in tea. Catechu and other vegetable astringent medicines contain tannic acid, some of them also the very similar gallic acid.

Tannin is often given as a medicine in pill for diarrhoea and for hemorrhages. A good astringent pill is made with three grains of tannin and a little opium, from one-twelfth to one-half a grain of the latter, according to the case.

Tannin is also frequently made part of an astringent gargle, particularly in rather chronic (prolonged) cases of sore throat.