In this massive tome, de Laurence, in his usual fashion, plagiarizes the works of others (Frances Barrett, Cornelius Agrippa, etc) and calls it his own. He also throws in a few select tidbits of Indian mysticism from various antiquarian sources but the volume remains largely devoted to western ceremonial magic. As is pretty well known, de Laurence was the king of the occult book pirates, his plagiarisms being the stuff of legend. He was also notorious for purposely misleading customers when it came to the dates of when specific editions were published. Most customers probably never noticed or cared. Regardless, catalogs from the de Laurence Company, which included books as well as occult jewelry and supplies were extremely popular for many years. Most of the magic information in this volume is obtainable elsewhere and should probably be sought elsewhere, but lets face it, everyone should have a copy of this just to see how full of himself de Laurence really was.