more definitely responding to pleasure and pain, when impacts are made on it, and thus can be used for the building up of the sensory bodies of the lower world. On each plane this downward sweep brings into activity these classes of Devas, making the intermediate links which are to work in the building of forms. The essence of the building of forms by a Deva is that he builds them of the matter of which his own body is composed. Prepared by that earlier evolution, qualities being developed in the downward sweep of the life of Íshvara, matter is, in the upward arc, gathered into definite forms, the bodies of plant, animal and man: thus definite vehicles are made, by which the highest consciousness can communicate with, and receive vibrations from, the lowest world. Let us now, having taken this very rapid sweep downwards, begin to climb upwards. Each kind of matter is now seen to possess certain qualities. Every physical atom has a number of sheaths interpenetrating and surrounding it, the sheath of astral matter with its power of responding to sensation, the sheath of mental matter with its power of responding to intelligence, as well as the sheaths, if they may be called so, of the two higher, Love and Existence, that will not be brought into activity for a long, long time. All is there. Íshvara now begins the great stage of brooding action that I spoke of the building up of a centre, and it is His first work to build physical forms out of this prepared material, all the Devas of the physical plane being ready to act as His agents, working under His impulse and under the direction of the Lord of the Devas of the physical plane. All these innumerable intermediate agents are wanted; for innumerable are to be the forms, and every one of them has to be builded.