body in the popular sense is not an elastic body from the scientific point of view, and, strange as it may sound, glass is much more elastic than India-rubber. Yet the glass does not elongate and is brittle. The proper definition of elasticity is the power of recovering the original form after distortion, and matter gradually acquires this power. As life develops, the equilibrium of the compounds that make up the form becomes more and more unstable, while at the same time the general cohesion of the form increases; when we come to the higher forms, such as the body of man, we find a power of maintaining the central position greater than we find in any other form, together with an increased plasticity and elasticity; so that a man can adapt himself to the cold of the polar regions, and to the heat of the tropics and of the equatorial zone, without losing his body, in a way that no lower animal can match, that is, he has the power of adapting his physical body to surrounding conditions to a greater extent than is the case with any other form. Coming back to the mineral kingdom we left, let us take the next stage; Íshvara can now expand and modify His material a little more than was originally possible without breaking it up. He begins the moulding of the vegetable kingdom, and there also he sets axes of growth, as "imaginary" and as real in their controlling force as in the crystal, though they are not always quite as easy to trace, they are nevertheless there. All the vegetable matter is built in according to these axes, and the natural classification of plants is largely determined by the numerical relations of the parts; thus the law of number shapes the form. As the matter becomes more plastic and yields more readily to the indwelling life, the higher members of that kingdom begin to show the dawning of sensation. That is due to the beginning of the vivification of the next sheath above the physical, composed of what we call astral matter, that which goes to make part of the manomaya kosha of the Vedântin. We see in that a growing susceptibility, an increasing sensory power, very slight in the vegetable world, but still present, and developed much more largely where the vegetable has a long experience of separated life. Take for instance a tree that has endured for centuries, and let me just trace the stages in which the dawning sensation is found, and even a dawn, though I hardly venture to use the word, a dawn of mental quality. That life in the tree responds to the vibrations received from outside, of cold and heat, of wind and rain, of sunshine and storm, and as the physical sheath is built up and developed by the action of the Devas working upon it, the etheric matter in it is continually thrown into vibration by the changes in temperature, light, and electrical conditions. The vibrations in the ethers that enter into the physical body are passed on to the atomic sub-plane, and as the atoms of the physical plane have their spirals made