Prosper Alpinus, a Paduan physician, wrote an account of his three years’ residence at Cairo (“De Medicina Ægyptorum”) in 1591, and has much to say of the manufacture of Theriaca in that city. It was only allowed to be made in public, and the ceremony was performed once a year in the month of May in the Mosque of Morestan by the chief pharmacist of the city in the presence of all the physicians. The operator would give no information to Albinus, a Christian, about the composition; but he got what he wanted from a famous herbalist who collected all the materials for the compound. Albinus states that at that time Italians, Germans, Poles, Flemings, Englishmen, and Frenchmen came to Cairo to purchase this true Theriaca. Theriaca (Tyriaca, as he calls it), was among the drugs recommended to Alfred the Great by Helias, the Patriarch of Jerusalem. The manuscript is quoted in “Anglo-Saxon Leechdoms” by the Rev. Oswald Cockayne. (See Vol. I, p. 124, 131.) Many allusions in old records show how highly the confection was esteemed by those who could afford to take it. According to Buckle (“Miscell. Works,” Vol. II, p. 303) it is first mentioned in English literature by Foucher de Chartres (1124). He had come to know of it in the first crusade. A “Pixis argenti ad Tyriacum” is named in the Close Roll of King John, 1208; in the old romance of Sir Tristrem (about 1250) a man is slain by a dragon; and “His mouth opened thai And pelt treacle in that man”; the “triacle box du pere apelle une Hakette garniz d’or” is mentioned among the precious effects of Henry V; in the Paston letters written in the reign of Edward IV we find allusions to “treacle pottes of Geane (Genoa) as my potecarie swerytht on to me, and moerovyr that they were never undoo syns that they came from Geane.” In early English books treacle was a term used metaphorically for the divinest blessings. Nothing could better prove the high appreciation in which it was held. Piers Ploughman (about 1370) writes, “Treuthe telleth that love ys tryacle for synne”; Chaucer (1340–1400) has “Crist, which is to every harm triacle”; in Coverdale’s Bible (1535) the sentence in Jeremiah viii, 22 is rendered “Is there no triacle in Gilead?”; Sir Thomas More (1573) writes of “laying up a store of cumfort in your hart as a triacle against the poyson of desperate dread”; and later Milton speaks of “the treacle of sound doctrine”; Jeremy Taylor says, “We kill the Viper and make treacle of him; that is, we not only escape from but get advantage by temptations.”