Let us, therefore, consider these pressures and tensions, or so-called repulsions and attractions that exist in this electro-magnetic Aether from the atomic standpoint, and by so doing try to realize how it is that one body, as the sun, acts upon another body, as the earth, through the intervening medium, the Aether. We can either consider it from the material standpoint, that is, by considering the Aether as matter, pure and simple, or by viewing it from the electrical standpoint, which may be considered from Clerk Maxwell's physical conception of an electric field. We will briefly consider it from the latter standpoint. Our conception of an aetherial atom was that of a spherical vortex atom possessing polarity and rotation on an axis. We must, however, make the distinction between the two kinds of aetherial atoms that Clerk Maxwell first indicated in his paper on Physical Lines of Force, _Phil. Mag._, 1861, and that Dr. Larmor has worked out in his _Aether and Matter_ from the electron standpoint, viz. that the Aether is composed of positive and negative electrons. Or we can accept Professor Lodge's theory, that Aether is made up of positive and negative electricity. We are compelled to accept the hypothesis of two kinds of aetherial or electrical atoms, whatever they may be called, in view of the teaching of electricity, that positive and negative electricity are always to be found in association, and in combination, wherever electricity exists. We have proved that electricity is to be found throughout the realm of space (Art. 78); therefore in all planetary and stellar regions electricity is present. Thus it exists in the so-called space between the sun and planets, and between the planets and satellites, forming around them all spherical shells, that become less and less dense as they recede from the central body. Now it is by the action of these positive and negative electrical atoms, that the attraction of one body is transmitted across space from the sun to the earth, or from the earth to the sun, or from the earth to Jupiter, or from Jupiter to any of the planets, the action always taking place along the line joining the centres of gravity of the bodies, _i. e._ the radius vector, and with a force equal to the quantities of electricity in association with those bodies (Art. 85), and with an intensity that always acts inversely as the square of the distance. Thus the inductive action of any sun, planet or satellite, or any other planet or satellite, can be mentally traced from atom to atom, across the intervening space, that is filled with the atomic Aether, between any two attracting bodies. So that, if the sun attracts the earth, it attracts it by and through the motions and properties of the electro-magnetic Aether that is made up of positive and negative electricity, and that attraction, being produced by a physical medium which is as real and tangible as air or water, is brought into harmony