In the various descriptive and explanatory passages to which attention is drawn, there is inevitably much repetition. Nevertheless each passage will be found to supplement the information given in other places and will serve to further our understanding.
2. The Theosophical Glossary which has a long entry under Astral Light, speaks of it as 'the in visible region that surrounds our globe, as it does every other, and corresponding as the second Principle of Kosmos (the third being Life, of which it is the vehicle) to the Linga Sarira or the Astral Double in man. A subtle Essence visible only to a clairvoyant eye, and the lowest but one (viz. the earth), of the Seven Akasic or Kosmic Principles'. See also The Secret Doctrine Vol. III p.500 (Vol. V p.477) where it is explained how, because the Astral Light reverses what is reflected in it, sensitives - whether clairvoyant or clairaudient - can be confused and hallucinated. The whole passage is explanatory of Akasa and the Astral Light.
3. In the Transactions of the Blavatsky Lodge (p.75) the question is asked: ‘And what is the Akasa proper?' It is answered: 'The Akasa is the eternal divine consciousness which cannot differentiate, have qualities, or act; action belongs to that which is reflected or mirrored from it. The unconditioned and infinite can have no relation with the finite and conditioned. The Astral Light is the Middle Heaven of the Gnostics ... ' Similarly, in answer to the question: 'What, in reality, is the Astral Light?' we find (p.53):