The astral region which I am to attempt to describe is the second of these great planes of nature--the next above (or within) that physical world with which we are all familiar. It has often been called the realm of illusion--not that it is itself any more illusory than the physical world, but because of the extreme unreliability of the impressions brought back from it by the untrained seer. This is to be accounted for mainly by two remarkable characteristics of the astral world--first, that many of its inhabitants have a marvellous power of changing their forms with Protean rapidity, and also of casting practically unlimited glamour over those with whom they choose to sport; and secondly, that sight on that plane is a faculty very different from and much more extended than physical vision. An object is seen, as it were, from all sides at once, the inside of a solid being as plainly open to the view as the outside; it is therefore obvious that an inexperienced visitor to this new world may well find considerable difficulty in understanding what he really does see, and still more in translating his vision into the very inadequate language of ordinary speech. A good example of the sort of mistake that is likely to occur is the frequent reversal of any number which the seer has to read from the astral light, so that he would be liable to render, say, 139 as 931, and so on. In the case of a student of occultism trained by a capable Master such a mistake would be impossible except through great hurry or carelessness, since such a pupil has to go through a long and varied course of instruction in this art of seeing correctly, the Master, or perhaps some more advanced pupil, bringing before him again and again all possible forms of illusion, and asking him "What do you see?" Any errors in his answers are then corrected and their reasons explained, until by degrees the neophyte acquires a certainty and confidence in dealing with the phenomena of the astral plane which far exceeds anything possible in physical life. But he has to learn not only to see correctly but to translate the memory of what he has seen accurately from one plane to the other; and to assist him in this he is trained to carry his consciousness without break from the physical plane to the astral or devachanic and back again, for until that can be done there is always a possibility that his recollections may be partially lost or distorted during the blank interval which separates his periods of consciousness on the various planes. When the power of bringing over the consciousness is perfectly acquired the pupil will have the advantage of the use of all the astral faculties, not only while out of his body during sleep or trance, but also while fully awake in ordinary physical life.