THE art which is called Goetic, being that of incantation, of sorcery, fascination and of the illusions and impostures connected therewith, has come somewhat arbitrarily to signify the last issue in diabolism of the more catholic and general art which is termed Practical Magic. The latter designation implies that there is a Magic on the theoretical side, or, as it may be, a philosophy of the subject, and this again is of two kinds: in modern days it has embodied various attempts to provide an explanation, a working hypothesis, for alleged phenomena of the past; of old it came forward with the accent of authority and carrying the warrants of a peculiar and secret knowledge; it taught rather than explained."