capable of intelligent classification and study, instead of being very much in the dark. The principle "works out" in practice, because it is based upon the immutable universal laws of life.
We shall not enter into an extended discussion of, or description of, the varied phenomena of mental influence or psychic activity. There are many books, many of them quite good, which have been written and published on this subject of late years. The main facts stated in these various books are correct, although the several writers have attempted to explain the phenomena by various pet theories of their own. The student may acquaint himself with these matters, and by using the theory of Mental Gender he will be able to bring order out of the chaos of conflicting theory and teachings, and may, moreover, readily make himself a master of the subject if he be so inclined. The purpose of this work is not to give an extended account of psychic phenomena, but rather to give to the student a master-key whereby he may un-
