Nevertheless, strong Ground having been taken that Witches existed, and Persons reputed Witches having been prosecuted with the utmost Rigor, and unrelenting Perseverance for a long Time, the chief Agents in these bloody Proceedings, firm in their Convictions that they had done righteously, deemed it incumbent upon themselves to keep the People to the same Opinions. This was the Origin of this unfortunate Book, "_The Wonders of the Invisible World_;" the chief Part, or perhaps all of which, was composed while above one hundred poor People in and about Salem and Boston were suffering a wretched imprisonment in the filthy and barbarous Jails of those Days, to which Jails and Prisons of our Days are in Comparison, Palaces. It was doubtless no sooner determined that the Proceedings against the Witches should be given to the World, than the Person was designated who should perform that Service. And from the very opening of that Work it is at once discovered, that it was intended as a "Defence" of what had been already done, as well as to urge a Continuance of those Proceedings, "until the Land was fully purged of the Demons which infested it." For a long Period, the Publication of Books detailing the Doings and Prosecutions of Witches seems to have extended rather than abridged the Belief in Witchcraft. This may be accounted for in Part from the Consideration that the Teachers of the People were themselves groveling in the Mire of Superstition. A more particular Reference to some of the Works best known somewhat more than two Centuries ago shall here follow. One Thomas Cooper published in 1617, a Work of this Title, "The Mystery of Witchcraft. Discouering, the Truth, Nature, Occasions, Growth and Power thereof. Together with the Detection and Punishment of the same. As also, the Seuerall Stratagems of Sathan, ensnaring the poore Soule by this desperate Practize of annoying the Bodie: with the seueral Vses thereof to the Church of Christ. Very necessary for the redeeming of these atheisticall and secure Times." This Author dedicated his Work to the "Maior and Corporation of the Ancient Citie of Chester," &c., in which Dedication we find the following, which, throwing some Light on the reverend Dealer in Darkness, is extracted. He commences, "Diuers, and verie weighty haue been the Motiues (right Worshipfull) to induce mee to the Dedication of these my Labors in this kinde vnto your Worships.