The name “astral” is not of our choosing; we have inherited it from the medieval alchemists. It signifies “starry”, and is supposed to have been applied to the matter of the plane next above the physical because of the luminous appearance which is associated with the more rapid rate of its vibration. The astral plane is the world of passion, of emotion and sensation; and it is through man’s vehicle on this plane that all his feelings exhibit themselves to the clairvoyant investigator. The astral body of man is therefore continually changing in appearance as his emotions change, as we shall presently show in detail.