At the time of Gregory of Tours, application was made of sainted reliquaries as a remedy against the devil and his demons. Gregory narrates the miraculous efficacy of a small pellet of wax, taken from the tomb of St. Martin, in extinguishing an incendiary fire started by his Satanic majesty, which was instigated by malicious envy, because this omnipotent talisman was in the custody of an ecclesiastic! This Turonese bishop records many instances of cures being effected at Martin's tomb. He himself was relieved of severe pains in the head by touching the disordered spot with the sombre pall of St. Martin's sepulchre. This remedy was applied on three different occasions with equal success. Once he was cured of an attack of mortal dysentery by simply dissolving into a glass of water a pinch of dust scraped from the tomb of St. Martin and drinking the strange concoction. At another time, his tongue having become swollen and tumefied, it was restored to its natural size and condition by licking the railing of the tomb of this saint. He knew of others who had been equally successful. An archdeacon, named Leonastes had sight restored to his blind eyes at the tomb of St. Martin, but unfortunately the fact that he later applied to an Israelitish physician caused his infirmity to return. Even a toothache was cured by St. Martin's relics. The following is an apostrophe to the relics of St. Martin by Bishop Gregory: "Oh ineffable theriac! ineffable pigment! admirable antidote! celestial purge! superior to all drugs of the faculty! sweeter than aromatics! stronger than unguents together; thou cleanest the stomach like scammony, the lungs like hyssop, thou purgest the head like pyre-thrig!"[27] From the end of the fifth century the exercise of the medical art was almost exclusively appropriated by cloisters and monasteries, whose occupants boldly vended the miraculous remedial properties of relics, chrism, baptismal fluids, holy oil, rosy crosses, etc., as of unquestioned virtue. In these early days living saints seem to have rivalled dead ones in their power over diseases, but of these we shall speak in a later chapter.