Vibrations 69 the extension of the world when it has become over-peopled or when, through its gradual cooling down, it becomes less suitable for a habitation. By and by we shall make new worlds. Mental and Physical A strong hope of £20,000 in the heart of a poor but capable man may effect a considerable redistribution of the forces of nature—may even remove mountains. .The little, unseen impalpable hope sets up a vibrating movement in a messy substance shut in a dark warm place inside the man's skull. The vibrating substance undergoes a change that none can note, whereupon rings of rhythm circle outwards from it as from a stone thrown into a pond, so that the Alps are pierced in consequence. Vibrations, Memory and Chemical Properties The quality of every substance depends upon its vibrations, but so does the quality of all thought and action. Quality is only one mode of action; the action of developing, the desire to make this or that, and do this or that, and the stuff we make are alike due to the nature and characteristics of vibrations. I want to connect the actual manufacture of the things a chicken makes inside an egg with the desire and memory of the chickens, so as to show that one and the same set of vibrations at once change the universal substratum, into the particular phase of it required and awaken a consciousness of, and a memory of and a desire towards, this particular phase on the part of the molecules which are being vibrated into it. So, for example, that a set of vibrations shall at once turn plain white and yolk of egg into the feathers, blood and bones of a chicken and, at the same time, make the mind of the embryo to be such or such as it is. Protoplasm and Reproduction The reason why the offspring of protoplasm progressed, and the offspring of nothing else does so, is that the viscid nature of protoplasm allows vibrations to last a very long