Few words are needed in sending this little book out into the world. It is the fifth of a series of Manuals designed to meet the public demand for a simple exposition of Theosophical teachings. Some have complained that our literature is at once too abstruse, too technical, and too expensive for the ordinary reader, and it is our hope that the present series may succeed in supplying what is a very real want. Theosophy is not only for the learned; it is for all. Perhaps among those who in these little books catch their first glimpse of its teachings, there may be a few who will be led by them to penetrate more deeply into its philosophy, its science and its religion, facing its abstruser problems with the student's zeal and the neophyte's ardour. But these Manuals are not written for the eager student, whom no initial difficulties can daunt; they are written for the busy men and women of the work-a-day world, and seek to make plain some of the great truths that render life easier to bear and death easier to face. Written by servants of the Masters who are the Elder Brothers of our race, they can have no other object than to serve our fellow-men. Reference to the astral plane, or Kamaloka as it is called in Sanskrit, has frequently been made by Theosophical writers, and a good deal of information on the subject of this realm of nature is to be found scattered here and there in our books; but there is not, so far as I am aware, any single volume to which one can turn for a complete summary of the facts at present known to us about this interesting region. The object of this manual is to collect and make some attempt to arrange this scattered information, and also to supplement it slightly in cases where new facts have come to our knowledge. - Taken from "The Astral Plane: Its Scenery, Inhabitants, and Phenomena" written by C. W. Leadbeater