Manly P. Hall 
Essay on the Fundamental Principles of Operative Occultism 

First published in 1929, this is one of Canadian-born mystical writer Manly P. Hall’s essays on the art of self-realization, as expressed through the wisdom of the ages.An Essay on the Fundamental Principles of Operative Occultism provides an early description of the seven spinal chakras and the science of regeneration.Beautifully illustrated with three oil paintings by Mihran K. Serailian.