that is just because it is a continuous development, an evolution. That the passage from the one into the other does actually take place we are bound, by all the canons of logical reasoning, to admit. It is only during life, however, that neurosis occurs or is possible. A great number of modes of organic energy proceed side by side in the pulsating tissues of the living dog, their orderly continuance being what we term _life_. And only in and through their orderly continuance is the maintenance of the structure of the tissues rendered possible. The organic structure is like a spinning top. Only so long as it spins and manifests its proper energy is its stability maintained. All around it are forces which tend to make it totter to its fall. But so long as it spins freely it can resist all minor attempts to upset its stability. And when the dog dies; what happens then? The molecular vibrations of the brain in common with all other forms of organic energy cease. The top no longer spins; and the structure totters to its fall. Decomposition sets in. The orderly organic changes which characterise life, give place to the destructive changes which characterise decay. But according to the law of the conservation of energy, although there is decomposition of the tissues of which the body was composed there is no destruction or annihilation of energy. The particular modes of energy through which the body was instinct with life pass away; but only to give rise to their equivalents in other modes of energy. Just as the puddle in the road disappears, but only to give origin to an equivalent mass of invisible water-vapor; just as the candle disappears, but only to give rise to its equivalent mass in the products of combustion; so throughout life and in death the energy which throbs in the tissues neither appears nor disappears except at the expense of, or to the gain of, other modes of energy. Life is like a vortex in a rapid stream; on surrounding energy it is dependent for its continued existence; into surrounding energy it melts away. And this is true not only of individual life but of life in its entirety. Some believe that the vortex had a natural origin, the organic being evolved from the inorganic. Others hold that it was through the direct interposition of the finger of God that the tiny vortex of primitive life was set a twirling. Be this as it may, once initiated the vortex of life is dependent on surrounding stores of energy.