Medicinally the coccus was principally employed by the Greek and Latin physicians as an application to wounds and for inflamed eyes. It acquired a very high reputation among the Arab doctors as a cordial for internal administration, and the famous Confection of Alkermes, invented by Mesué the younger, who was contemporary with Avicenna, continued in popular favour up to the eighteenth century. Meanwhile, the external application of kermes lingered in the use of scarlet cloth in measles, erysipelas, and other red diseases. The original Confection of Alkermes contained juice of rennet apples, rose water, silk, kermes, sugar, ambergris, amber, yellow santal, lapis lazuli, pearls, musk, and leaf gold. In the sixteenth and seventeenth centuries this compound was prepared publicly at Montpellier, and was supplied from that city to all Europe. It was described as good for all maladies proceeding from the melancholic humour, faintings, palpitations, heart weakness, and in slow convalescence. It fortified the stomach, rejoiced the heart, and engendered good spirits. The dose was 1 drachm, or it might be applied externally on a piece of scarlet cloth. MEL ÆGYPTIACUM is a very ancient compound used chiefly by veterinarians as an escharotic. Its name suggests Egyptian origin, but it has not been traced further back than to the “Grabadin” of John Mesué, the Arabian author, about the year 800. Scribonius Largus before him gives a similar formula under the name of Hygra. Mesué’s formula was to boil 1 oz. of vinegar with 1 oz. of honey to the consistence of honey and to add 2 drachms of verdigris. This formula was modified in various ways in the different pharmacopœias in which it was adopted; alum was added in some cases, cream of tartar in others. The chemical action varied with the process, but generally the result was to reduce a part of the verdigris to an oxide of copper, metallic copper, and a little basic acetate in different proportions. The compound appeared in the London Pharmacopœia of 1721 as Unguentum Ægyptiacum; in that of 1746 as Mel Ægyptiacum; as Oxymel Æruginis in that of 1788; and as Linimentum Æruginis in the P.L. 1851. In this last edition the formula given was to dissolve 1 oz. of verdigris in 7 oz. of vinegar, and boil this with 14 oz. of honey to a proper consistence. It was not adopted in the British Pharmacopœia. In old veterinary recipes it was often combined with tincture of myrrh to form a detergent liniment, and occasionally in a very diluted form was administered internally as a tonic. On the Continent, where its employment lingered longer than in this country, an Egyptiac of Solleysel, from which the vinegar was omitted, but litharge, sulphate of zinc, and arsenic in small proportions added, was frequently preferred to the original.