First translated into English in 1897 by S. L. MacGregor Mathers, head of the Golden Dawn, this manuscript had a major impact on the Golden Dawn and Aleister Crowley. The text features rites that lead to the revelation of magical secrets by guardian angels and other spirits, as well as a system of magic word square talismans designed to unlock an array of superhuman powers. A 7" x 10" paperback with 240 pages.