The phenomena of Psychomancy, etc., may be grouped into three classes, each being produced by its own special class-cause. In either or all cases, the impressions are received by and through the Astral Senses, but there are three distinct ways in which, and by which, these impressions are received. These ways, which we shall now proceed to consider in detail, may be classified under the following terms: (1) Sensing by the "quickening" of one's Astral Senses sufficient to perceive more clearly the etheric vibrations or currents, the auric emanations of persons and things; and similar phases of Psychomancy, but which does not include the power to sense occurrences happening in distant places; nor the power to sense the records of the past, or to receive indications of the future. (See Lesson III.) (2) Sensing by means of the "Astral Tube," erected in the Ether by the operation of one's Will or Desire, and which acts as a Psychic "telescope," or "microscope," with "X Ray" features. (See Lesson IV.) (3) Sensing by means of the actual projection of one's own Astral Body to the distant scene. (See Lesson VII.) CLAIRAUDIENCE. "Clairaudience" is a term sometimes used to indicate Astral Hearing. Some writers on this subject treat "Clairaudience" as a separate class of phenomena. But we fail to see the distinction they make. It, of course, employs a different Astral Sense from that generally employed, but both are Astral Senses functioning on the Astral Plane, just as the physical senses of Seeing and Hearing function on the Physical Plane. And, more important, both forms of Astral Sensing are subject to the same laws and rules. In other words, all that is said in the lessons of this book on the subject of Psychomantic Vision holds equally true of Clairaudience. Thus, there may be Simple ~Clairaudience~; Space ~Clairaudience~; Past Time ~Clairaudience~; Future Time ~Clairaudience~, etc.; also ~Clairaudient~ Psychometry; ~Clairaudience~ through Crystal Gazing, etc. Psychomantic Vision is the employment of the Astral ~Sight~, while Clairaudience is the similar employment of the Astral ~Hearing~. In many cases of Psychomantic Vision there is an accompaniment of Clairaudience; while in others it may be missing. Likewise, Psychomantic Vision usually accompanied Clairaudience, although sometimes one may be able to ~hear~ astrally, although no seeing. You will notice that in many of the instances of Psychomantic Vision related in this book, there is a mention of the person ~hearing~ words or sounds, while seeing the vision--this, of course, is Clairaudience. LESSON II. HOW TO DEVELOP YOURSELF.