William Walker Atkinson 
Advanced Course in Yogi Philosophy and Oriental Occultism 

The twelve lessons forming this volume were originally issued in the shape of monthly lessons, known as “The Advanced Course in Yogi Philosophy and Oriental Occultism, ” during a period of twelve months beginning with October 1904, and ending September 1905. These lessons were intended as a continuation of, or sequel to “The Fourteen Lessons in Yogi Philosophy and Oriental Occultism” issued during the previous year.