ofthe sense organs is known, and that they are composed of tiny filaments originating in the middle of the brain, that they spread out into all our memben in which there is feeling and that they finally lead without interruption to the exterior portions of the body, that so long as one is awake and in good health one end cannot be moved without the other being moved at the same time, since they are always made somewhat taut by the animal spirits they contain just as one part of a taut string cannot be moved without the other being disturbed.