Every new discovery pointed more and more definitely to the greater persistence of the higher forms of energy. What appeals to the more primitive and lower set of senses holds to even its inner form for but a comparatively brief time. Touch is the primary sense, and all that it, unaided by the other senses, can discover is apt to keep changing its form. Taste and smell are simple modifications of touch and they report of things in perpetual transformation. Hearing and sight are the highest of the first set of senses; for they respond to types of energy that travel from vast distances. Hearing is the lower of the two, because the lower senses are conscious unaided of the medium in which the energy travels. Sight has as her courier an energy which bridges infinity, and its medium no lower sense can cognise. Light approaches nearer to indestructibility than anything the original senses know. The last-developed of the senses, the firla, takes cognisance of an energy, magnetism, which is farthest of all from the need of a material medium; whilst the filammu or will-telegraph brings soul to soul irrespective of all sense-cognisable means of communication, and proves the existence of a medium more refined than any that either the senses or the reason has yet come to know. This medium, doubtless that of thought itself, as the highest and least material, must be least destructible, least transformable, least unstable in equilibrium of all known mediums. Their ooarans would soon be made delicate enough to measure the faintest presence of soul, and would decide the point whether this medium, evidently spread throughout the universe, was of the same stuff as the soul.