Iron was not regarded as of special medicinal value by the ancients. The alleged administration of the rust of iron by Melampus was apparently looked upon as a miracle, and though this instance is often quoted as the earliest record of ferruginous treatment, it does not appear to have been copied. Classical allusions, such as that of the rust of the spear of Telephus being employed to heal the wounds which the weapon had inflicted, which is referred to by Homer, can hardly be treated as evidences of the surgical skill of that period. Iron is not mentioned as a remedial agent by Hippocrates, but Dioscorides refers to its astringent property, and on this account recommends it in uterine hæmorrhage. He states that it will prevent conception; it subsequently acquired the opposite reputation. The same authority, as well as Celsus, Pliny, and others, allude to a practice of quenching a red-hot iron in wine or water in order to produce a remedy for dysentery, weak stomachs, or enlargement of the spleen. The later Latin physicians made very little use of iron or its compounds. Oribasius and Aetius write of the uses of its oxide outwardly in the treatment of ulcers, and Alexander of Tralles prescribes both an infusion and the metal in substance for a scirrhus of the spleen. He was probably the earliest physician who discovered its value as a deobstruent. Rhazes, the Arab, gave it in substance, and in several combined forms, but Avicenna regarded iron as a dangerous drug, and suggested that, if any had been accidentally taken, some loadstone should be administered to counteract any evil consequences. Vitriol (sulphate of iron and sulphate of copper) was the iron medicine most in use up to the sixteenth century; but it was not given with the special intention of giving iron. Paracelsus had great faith in the Arcanum Vitrioli, which, indeed, appears to have been sulphur. He also introduced the use of the magnet, but only externally. It was in the century after him that the salts of Mars came into general medical use. In the course of the seventeenth and eighteenth centuries the preparations of iron became very numerous. Iron filings brought into an alcohol, that is very finely powdered, were much employed, sometimes alone and sometimes saccharated, or combined with sugar candy. Crocus martis was the sesquioxide, æthiops martial was the black oxide, and flores martis, made by subliming iron filings and sal ammoniac, yielding an ammoniated chloride of iron, was included in the several British pharmacopœias of the eighteenth century.