What a subject, were I to enter on it, would be the narratives of magical writers! These precious volumes have been so constantly wasted by the profane, that now a book of real magic requires some to find it, as well as a great magician to use it. Albertus Magnus, or Albert the Great, as he is erroneously styled--for this sage only derived this enviable epithet from his surname _De Groot_, as did Hugo Grotius--this sage, in his "Admirable Secrets," delivers his opinion that these books of magic should be most preciously preserved; for, he prophetically added, the time is arriving when they would be understood! It seems they were not intelligible in the thirteenth century; but if Albertus has not miscalculated, in the present day they may be! Magical terms with talismanic figures may yet conceal many a secret; gunpowder came down to us in a sort of anagram, and the kaleidoscope, with all its interminable multiplications of forms, lay at hand for two centuries in Baptista Porta's "Natural Magic." The abbot Trithemius, in a confidential letter, happened to call himself a magician, perhaps at the moment he thought himself one, and sent three or four leaves stuffed with the names of devils and with their evocations. At the death of his friend these leaves fell into the unworthy hands of the prior, who was so frightened on the first glance at the diabolical nomenclature, that he raised the country against the abbot, and Trithemius was nearly a lost man! Yet, after all, this evocation of devils has reached us in his "Steganographia," and proves to be only one of this ingenious abbot's polygraphic attempts at _secret writing_; for he had flattered himself that he had invented a mode of concealing his thoughts from all the world, while he communicated them to a friend. Roger Bacon promised to raise thunder and lightning, and disperse clouds by dissolving them into rain. The first magical process has been obtained by Franklin; and the other, of far more use to our agriculturists, may perchance be found lurking in some corner which has been overlooked in the "Opus majus" of our "Doctor mirabilis." Do we laugh at their magical works of art? Are we ourselves such indifferent artists? Cornelius Agrippa, before he wrote his "Vanity of the Arts and Sciences," intended to reduce into a system and method the secret of communicating with spirits and demons.[198] On good authority, that of Porphyrius, Psellus, Plotinus, Jamblichus--and on better, were it necessary to allege it--he was well assured that the upper regions of the air swarmed with what the Greeks called _daemones_, just as our lower atmosphere is full of birds, our waters of fish, and our earth of insects. Yet this occult philosopher, who knew perfectly eight languages, and married two wives, with whom he had never exchanged a harsh word in any of them, was everywhere avoided as having by his side, for his companion, a personage no less than a