An illustrated text discussing the original existence and present survival of an Adept Tradition in the Moslem world. The principle arcana of secret schools set up by mystics for the purpose of perpetuating the inner meaning of the Moslem faith is presented and their systems of meditation, concentration, and Yogic practices-similar to those of the Hindu mystics-are explored. The manner in which these practices led to the development of internal faculties and the ability to control natural phenomena is revealed. How the secret Moslem sects derived important philosophical and theurgic elements from Gnosticism, Judaism, and Christianity is also discussed.