2017 Reprint of 1925 Edition. Full facsimile of the original edition, not reproduced with Optical Recognition software. This early work by Hall is devoted to the study of the ancient Mystery Schools and the work which they have done in the world throughout the various ages. There is also a treatise on the path of discipleship. The reader of this booklet is equipped to discriminate between the various so-called spiritual organizations and is protected against unfortunate involvement.