What is the key to the greatest scientific discovery of modern times, viz. wireless or aetherial telegraphy, which is girdling the earth with its mysterious communications? Is not the key to that discovery to be found in this universal electro-magnetic medium? Whence come the X-rays, Rontgen rays, and other light rays with their adaptability to human suffering, if they come not from this same electro-magnetic medium? their adaptability to human suffering being dependent upon the intimate and close relationship that exists between the physical body and the electro-magnetic medium. Where is the key to the principle underlying the gramophone, the phonograph and the telephone, if it be not in this self-same atomic and easily impressible medium? Nay! let us go further, and ask ourselves where is the key to be found for the many marvellous effects of so-called spirit phenomena? Who can read F. W. Myer's _Human Personality and its Survival of Bodily Death_, and not feel that we are standing on the threshold of the unseen world? Already men are asking themselves the meaning of the strange sensations which they receive from unseen sources; already men's spirits are vibrating in unison with vibrations that come from the unseen world; and to-day we see spiritual phenomena as through a glass darkly, and the question arises, what is the medium of all this communication, of all these vibrations? Is there no medium at all which forms the medium of communication? To assert that would be to assert something opposed to all experience and therefore would be unphilosophical. May not then the theory of an atomic universal electro-magnetic medium help us on in our groping and searching after light in this direction? Who will uplift the veil? Already we peer almost into the spirit world. A little more light, a little more truth, and then there will burst forth upon the hearts and minds of men the grandest and most glorious truth that Nature can reveal of her Creator, and then men shall come to know and understand the place that God holds in the Universe, such truth being advanced on its way by an atomic, universal electro-magnetic Aether which is as truly matter as our own bodies. ART. 127. _God and the Universe._--To the superficial reader it may appear at first sight, that the theory of the Aether suggested in this work leaves no place in the Universe for the operations and existence of an Infinite and living Spirit, a God. It may be objected, that if all matter and all modes of motion find their physical origin in one common and primordial medium, the electro-magnetic Aether, where is the necessity for the existence of an Eternal and Infinite Spirit?