of what occurred while his consciousness was in the planes of Svapna and Sushupti. Entrance upon these states should not I think be understood as meaning that the mind has deserted its fleshly tabernacle in search of such experience. Departure from the physical form is no more necessary for this than for clairvoyence, but a transfer of the consciousness in us from one plane to another is necessary. Now as we generate Karma in the dreaming and deep sleep states which may either help or hinder the soul in its evolution, it is a matter of importance that we should take steps to promote the unification of these states, so that the knowledge and wisdom of any one state may be used to perfect the others. Our thoughts and actions in the waking state react upon the dreaming and deep sleep, and our experiences in the latter influence us in the waking state by suggestion and other means. The reason we do not remember what occurs in Svapna and Sushupti is because the astral matter which normally surrounds the thinking principle is not subtle enough to register in its fullness the experience of any one upon the more spiritual planes of consciousness. To increase the responsiveness upon the more spiritual planes of consciousness. To increase the responsiveness of this subtle matter we have to practise concentration, and so heighten the vibrations, or in other words to evolve or perfect the astral principle. Modern science is rapidly coming to the conclusion that the differences perceived in objects around us, are not differences in substance, but differences of vibration in one substance. Take a copper wire; pass electrical currents through it, gradually increasing their intensity, and phenomena of sound, heat and light will be manifest, the prismatic colours appearing one after the other. Similarly by an increased intensity in the performance of every action, the consciousness is gradually transferred from the lower to the higher planes. In order to give a point, or to direct the evolving faculties into their proper channel, continual aspiration is necessary. Take some idea--the spiritual unity of all things, for example--something which can only be realized by our complete absorption in spiritual nature; let every action be performed in the light of this idea, let it be the subject of reverent thought. If this is persisted in, we will gradually begin to become conscious upon the higher planes, the force of concentration carrying the mind beyond the waking into Svapna and Sushupti. The period between retiring to rest and awakening, formerly a blank, will begin to be spotted with bright lights of consciousness, or, as we walk about during the day such knowledge will visit us. "He who is perfected in devotion findeth spiritual knowledge springing up spontaneously in himself" say Krishna. Patanjali recommends dwelling on the knowledge that presents itself in dreams; if we think over any such experience, many things