For these reasons we read, with some degree of astonishment, a treatise on this exploded subject, by a philosopher, an eminent physician, a privy counseller of the then Empress Queen, and a professor in the university of Vienna. It was long doubted whether the professor was in earnest, but the world was at length forced to admit, that the great Antonius de Haen certainly believed in witchcraft, and reckoned the knowledge of it, in treating a disease, of great importance to a physician--to the acquisition of which useful knowledge, he dedicated a great part of his time. In the year 1758, three old women, condemned to death for witchcraft, were brought by order of the Empress from Croatia to Vienna, to undergo an examination, with regard to the equity of the sentence pronounced against them. The question was not whether the crime existed; the only object of inquiry respected the justice of its application. The author, and the illustrious van Swieten, were appointed to make the investigation. After reading over the depositions, produced on the trials with the greatest care, and interrogating the culprits themselves _most vigorously_ by means of a Croatian interpreter, these great physicians discovered that the _three old_ women were not witches, and prevailed with the Empress to send them home in safety. It was this circumstance that induced de Haen to write on magic. That some judgment may be formed of de Haen's very extraordinary and curious production written in the latter part of the eighteenth century, we shall here furnish our readers with an abstract of its principles and reasoning, to which we shall subjoin some remarks. By the crime of magic, the author informs us, he means any improper communication between men and evil spirits, whether it be called theurgy, soothsaying, necromancy, chiromancy, incantation or witchcraft. He proposes to prove, in the first place, that such a communication does actually exist. He quotes the Egyptian magicians, the witch of Endor, the possessions mentioned in the New Testament, and many more exceptionable authorities from the fathers, and canons of the church. He is positive the incantations of the Egyptian magicians were real operations of infernal agents, and that the accounts of them, delivered by Moses, can admit no other construction.