IN this Work, which we have written chiefly for the information of those who are curious and indefatigable in their enquiries into occult knowledge, we have, at a vast labour and expence, both of time and charges, collected whatsoever can be deemed curious and rare, in regard to the subject of our speculations in Natural Magic--the Cabala--Celestial and Ceremonial Magic--Alchymy--and Magnetism; and have divided it into two Books, sub-divided into Parts: to which we have added a third Book, containing a biographical account of the lives of those great men who were famous and renowned for their knowledge; shewing upon whose authority this Science of Magic is founded, and upon what principles. To which we have annexed a great variety of notes, wherein we have impartially examined the probability of the existence of Magic, both of the good and bad species, in the earliest, as well as in the latter, ages of the world. We have exhibited a vast number of rare experiments in the course of this Treatise, many of which, delivered in the beginning, are founded upon the simple application of actives to passives; the others are of a higher speculation. Francis Barrett