own single existence, the marvelous playfulness of early youth, and the roguish mockery of the mother’s love, as well as the bursts of temper and rage, all belong to infancy. And all this flashes spontaneously, must flash spontaneously from the first great center of independence, the powerful lumbar ganglion, great dynamic center of all the voluntary system, of all the spirit of pride and joy in independent existence. And it is from this center too that the milk is urged away down the infant bowels, urged away towards excretion. The motion is the same, but here it applies to the material, not to the vital relation. It is from the lumbar ganglion that the dynamic vibrations are emitted which thrill from the stomach and bowels, and promote the excremental function of digestion. It is the solar plexus which controls the assimilatory function in digestion.