in pharmacy, medicines which when snuffed up the nose promote a discharge of mucus from that part.

Among the milder kinds of the errhines we may reckon marjoram, basilicon, thyme, hyssop, savory, marum syriacum, the tops of origanum, flowers of lilies of the valley, and gum benzoin, the resin of guajacum, fine rappings of aloes wood, dry volatile salt of sal ammoniac perfumed with oil of marjoram, as also white vitriol. On the contrary, violent errhines are, euphorbium, the powder of white hellebore, and, in a milder degree, several sorts of snuffs, precipitate mercury, and pepper.

Errhines are more friendly to the constitution and nerves than sternutatories, by their subtile, acid, and volatile salt gently stimulating the pituitary membrane, and drawing the mucid humour from it. They are also much safer than sternutatories in their effects.

Errhines prepared of cephalic herbs are of singular service in oppressive pains of the head, a hemiplegia, lethargic disorders, weaknesses of memory, flusings of the head, and coryza; mucous defluxions of the eyes, drownfolds, vertigoes, and in cases where the malignant humours generated by the lues venera are lodged in the membranes of the nostrils.