High in the esteem of the Hindû stands the serpent, both as a symbol and a creature. Moving in a wavy line, he figures the vast revolution of the Sun through eternal space carrying the rapidly whirling Earth in her lesser orbit; periodically casting his skin, he presents a visible illustration of renewal of life or reïncarnation; coiling to strike, he shows the working of the law of Karma-Nemesis which, with a basis in our actions, deals an unerring blow. As a symbol with tail in mouth, forming a circle, he represents eternity, the circle of necessity, all-devouring Time. For the older Initiates he spoke to them also of the astral light which is at once devilish and divine. Probably in the whole field of Theosophic study there is nothing so interesting as the astral light. Among the Hindûs it is known as Akâsa, which can also be translated as æther. Through a knowledge of its properties they say that all the wonderful phenomena of the Oriental Yogis are accomplished. It is also claimed that clairvoyance, clairaudience, mediumship, and seership as known to the Western world are possible only through its means. It is the register of our deeds and thoughts, the great picture gallery of the earth, where the seer can always gaze upon any event that has ever happened, as well as those to come. Swimming in it as in a sea are beings of various orders and also the astral remains of deceased men and women. The Rosicrucians and other European mystics called these beings Sylphs, Salamanders, Gnomes, Undines, Elementals; the Hindû calls them Gandharbhas or celestial musicians, Yakshas, Rakshâsas and many more. The "spooks" of the dead--mistaken by Spiritualists for the individuals who are no more--float in this Akâsic substance, and for centuries have been known to the mystical Hindû as Bhûta, another name for devil, or Pisâcha, a most horrible devil; neither of them any more than the cast-off soul-body nearest earth, devoid of conscience and only powerful for evil.