attributed to a saint of the ninth century, which remained in use down to a recent period, especially declares insects injurious to crops to be possessed of evil spirits, and names, among the animals to be excommunicated or exorcised, mice, moles, and serpents. The use of exorcism against caterpillars and grasshoppers was also common. In the thirteenth century a Bishop of Lausanne, finding that the eels in Lake Leman troubled the fishermen, attempted to remove the difficulty by exorcism, and two centuries later one of his successors excommunicated all the May-bugs in the diocese. As late as 1731 there appears an entry on the Municipal Register of Thonon as follows: "RESOLVED, That this town join with other parishes of this province in obtaining from Rome an excommunication against the insects, and that it will contribute pro rata to the expenses of the same." Did any one venture to deny that animals could be possessed by Satan, he was at once silenced by reference to the entrance of Satan into the serpent in the Garden of Eden, and to the casting of devils into swine by the Founder of Christianity himself.(361) (361) See Menabrea, Proces au Moyen Age contre les Animaux, Chambery, 1846, pp. 31 and following; also Desmazes, Supplices, Prisons et Grace en France, pp. 89, 90, and 385-395. For a formula and ceremonies used in excommunicating insects, see Rydberg, pp. 75 and following. One part of this superstition most tenaciously held was the belief that a human being could be transformed into one of the lower animals. This became a fundamental point. The most dreaded of predatory animals in the Middle Ages were the wolves. Driven from the hills and forests in the winter by hunger, they not only devoured the flocks, but sometimes came into the villages and seized children. From time to time men and women