function of the angels. The heretical Bishop Natalius having in vain been admonished by God in dreams, was at last lashed through the whole of a night by holy angels, till he was brought to repentance, and, clad in sackcloth and covered with ashes, he at length threw himself at the feet of Zephyrinus, then Bishop of Rome, pointing to the marks of the scourges which he had received from the angels, and implored to be again received into communion with the Church.(1) Augustine says that demons inhabit the atmosphere as in a prison, and deceive men, persuading them by their wonderful and false signs, or doings, or predictions, that they are gods.(2) He considers the origin of their name in the sacred Scriptures worthy of notice: they are called [--Greek--] in Greek on account of their knowledge.(3) By their experience of certain signs which are hidden from us, they can read much more of the future, and sometimes even announce beforehand what they intend to do. Speaking of his own time, and with strong expressions of assurance, Augustine says that not only Scripture testifies that angels have appeared to men with bodies which could not only be seen but felt, but what is more, it is a general report, and many have personal experience of it, or have learned it from those who have knowledge of the fact, and of whose truth there is no doubt, that satyrs and fauns, generally called "Incubi," have frequently perpetrated their peculiar wickedness;(4) and also that certain demons called by the Gauls _Dusii_ every day attempt and effect the same uncleanness, as {136} witnesses equally numerous and trustworthy assert, so that it would be impertinence to deny it.(1)