"A medical practitioner," says Paris, "after repeated trials to reduce a strangulated hernia, injected an infusion of tobacco, and shortly after sent the patient in a carriage to the Westminster Hospital, for the purpose of undergoing the operation; but the unfortunate man arrived only a few minutes before he expired." "I knew a woman," says the same learned author, "who applied to the heads of three of her children, afflicted with scald-head, an ointment composed of snuff and butter; but what was the poor woman's surprise, to find them immediately seized with vertigo, violent vomiting, fainting, and convulsions." We next come to its effects as an _emetic_. "As such," says Professor Chapman, "tobacco claims our attention. Cullen and many others opposed its use, on account of the harshness of its operation. Certainly it exceeds all others in the promptness, violence, and permanence of its impressions. But these very qualities, unpleasant as they are, enhance its value in many cases." "Tobacco seems especially to be adapted to the evacuation of some poisons; and it has this advantage, that it acts with equal certainty and expedition, when applied to the region of the stomach in the form of a poultice, as when internally administered." Professor Barton says, he had recourse to an application of the moistened leaves of this plant to the region of the stomach, with complete success, to expel an inordinate quantity of laudanum, in a case where the most active emetics, in the largest doses, were resorted to in vain. But most poisons, particularly the corrosive, are attended with so much exhaustion, that it would seem perilous to administer tobacco, lest by its own depressing effects, the powers of vitality might be irrecoverably extinguished. In many instances, however, it appears that it may be administered in small doses with safety and advantage. We are informed by a respectable writer, that while at the Cape of Good Hope, he had a number of Hottentots, with intermittent fever, under his care. Having few medicines, he resorted to tobacco, and found six grains of snuff as effectual in exciting vomiting, as two of Tartar emetic. By many it is preferred in minute doses, as a nauseating medicine. Thus administered, it has succeeded in subduing some of the most violent symptoms of the most furious cases of mania; and where it cannot be given by the mouth, from the obstinacy of the patient, it may with equal benefit be applied in the form of a poultice.