These correspondences are utilised in Raja Yoga and Hatha Yoga, the Kingly Yoga and the Yoga of Resolve. The Raja Yoga seeks to control the changes in consciousness, and by this control to rule the material vehicles. The Hatha Yoga seeks to control the vibrations of matter, and by this control to evoke the desired changes in consciousness. The weak point in Hatha Yoga is that action on this line cannot reach beyond the astral plane, and the great strain imposed on the comparatively intractable matter of the physical plane sometimes leads to atrophy of the very organs, the activity of which is necessary for effecting the changes in consciousness that would be useful. The Hatha Yogi gains control over the bodily organs with which the waking consciousness no longer concerns itself, having relinquished them to its lower part, the “subconsciousness.” This is often useful as regards the prevention of disease, but serves no higher purpose. When he begins to work on the brain centres connected with ordinary consciousness, and still more when he touches those connected with the super-consciousness, he enters a dangerous region, and is more likely to paralyse than to evolve. That relation alone it is which makes matter cognizable; the change in the thinker is answered by a change outside, and his answer to it and the change in it that he makes by his. answer re-arrange again the matter of the body which is his envelope. Hence the rhythmic changes in matter are rightly called its cognizability. Matter may be known by consciousness, because of this unchanging relation between the two sides of the manifest LOGOS who is one, and the Self becomes aware of changes within himself, and thus of those of the external words to which those changes are related. Mind