The present author, my esteemed friend, Swami Mukerji, a Yogi who comes out of a successive genera tion of Yogis, is a fit and proper instrument to handle the subject. He, in these lessons prepares the layman for an understanding of the Yoga and, through a series of. Wise and masterful sayings, impresses on the mind of the reader the necessity for rising above material ism, nay, solves the very problem What am I? Every line is pregnant with mature thoughts and rivets one's attention, and makes him think, think, think. This is not a work for which an introduction, brie?y setting forth the contents, could be written.