To date I have read this book 4 times, and with each read my understanding proliferates. It gives one of the best descriptions of the astral world and it's inhabitants I've ever read. This text was written by one of the most celebrated psychic, and Theosophist A E Powell. This is the 2nd book in a series of works that outlines the various bodies of a person, as well as the "body" of the Solar system, and it's 6th dimensional workings. The complete list in the series are, The Etheric double, The Astral Body, The Mental Body, The Causal body, and The Solar system. All the books are consistent in their style and detail.
As you read about the wonders of the 4th dimension, a sense of awe, and inspiration unfolds. The level of detail is just such that a vivid visualization blossoms before the minds eye, and greatly enhances the curiosity of the reader. One such description is the viewing of a watch. When any object is seen from the astral world all views are seen at once. For instance you would see every view of every object in side, and outside of the watch simultaneously. Or in the case of a book, you would be able to see every page of a closed book, as though the pages were all laid out with the correct orientation. Time as a component of the 4th dimension does not enter the equation until you reach the higher sub-planes, when you can see the "history" of the object in all its stages of existent, from birth to dissolution. Because their are no specific sense organs in the astral body, the "entire" astral body can see, hear, taste, smell, and feel concurrently. Keep in mind you would experience the astral counter part of the five senses, which would be much more intense, because the experience does not have to go through the physical senses. The text also talks about the science behind, such phenomenon as disintegration(teleportation), materialization, and levitation, all by utilizing the etheric pressure which surrounds us constantly.
Also remember that astral matter responds to the slightest thought. One simply has to think of some thing, or somewhere, and the surrounding matter reacts to become the thinker's thoughts. What on this plane is a nomenon in the mind's eye, becomes a phenomenon in the astral world that is objective. This manifestation is explain because 4 dimensional matter is more alive, and is known as elemental essence . It has quasi intelligence, and can seem to be a living thing to the uninitiated. It is this type of information that makes this book a good source to any "neophyte" who wishes to "remember" how to travel into the inner realms.
Another section of the book talks about the vast types of inhabitants. From the astral corpse( shell, shade), to people in the dream state, people who have died, people who are waiting to reincarnate, thought forms, nature spirits, Astral bodies of animals, The Devas, Adepts and their students, The dark magician and his student, elemental essence, Elementals, Artificial Elementals (created by people to carry out their will). These and other "life forms" are covered in detail by the author.
The 7 sub planes are talked about and what can be expected when one is balanced between them. The lowest of the sub astral plane extents below the surface of the earth. Its easy to see why hell was thought to be below ground. Only the most base and lonesome people go there, by default of their choice in maintaining a coarse, and low vibration. The highest sub-plane of the astral world is said to reach to the surface of the moon. Beyond that the heaven (5th dimension))world begins. According to the book, depending on your temperament, and personality type, you will naturally migrate to one of these sub levels. This condition can be changed by a change of character, and an act of will. Also knowledge of what to expect is a great plus.
The author talks about the why of what people see of the astral world. A person can be awake on the astral plane, and live only in their imagination. They would be totally oblivious to the rest of the 4th dimension. There are groups of people who live in their stereotypical definition of heaven, with the angels flying around on clouds playing harps, and drinking milk and honey throughout eternity , while endlessly praising their version of God. This is what the person wants, and this is what they create. This will be experienced untill their soul cries out for change and expansion, this is called evolution. Also the author talks about how a person works out all the things they would have like to have done in the physical world, if only they had the fortitude, and resources to complete them. From being a rock star , to feeding the indigents, to solving all the world's problems and creating a utopia, to finally house training the family pet. All things are worked out in a grand series of what if scenarios. A person cannot go beyond themselves, until they first go through themselves.
Another section of the book describes what an average person goes through when they die. The type of environment they create, the type of cities they inhabit. Keep in mind, some of these astral cities have been around for centuries, such as Agam Des, Retz, Damcar, Shamballa, Sat Dham, Akeviz, Kimtaved, Nampakbe, and of course Sahasra-dal-Kanwal of the lower heaven world. Adding to the wonder of such a "place" is that each person who has passed through, leaves a little of their creative design.
It is highly stress that a person's moral character be develop to a high degree, least they abuse the possibilities that come with being able to transfer their consciousness to their astral body. The book goes further into detail as to what happens when you die in the astral world, the average stay there is from 20 to 30 years). If a person has over come certain character flaws, and has some knowledge of esoteric things, their stay in the astral world can be as little as 1 to 2 years, with some people by passing it altogether. The stage you pass into after the astral world(the heaven world) is beautifully describe in the 3rd series of his 5 books called the Mental body, of which I give a succinctly interesting review on. Walk, run, or astral project to audition this book, and view it the way you would a road map for a trip you are about to embark on. There's enough gaps in the map that there is a sense of adventure and the unknown, but enough information that you don't get lost.