Now with this defining of space it is evident that it matters but little what the material substances of the universe may be. If the hundreds of millions of bright suns—which are thought to be few in proportion to the invisible, dark worlds scattered throughout space—are but as a single drop of water to all the Atlantic Ocean; then we are compelled to admit that our earth and sun, and even the great host of luminous orbs, must be of little consequence beside this infinitely vaster and more intensely active ether. It behooves us above all things, then, to inquire what this amazingly great space may be. Let us quote further from the above author: “Every particle of matter whether solid, liquid, or gaseous, is composed of molecules. No doubt these molecules are so numerous that even in the air we breathe the capacity of a lady’s thimble would contain a multitude of molecules so great that it has to be enumerated by billions.” Again, “The air is ultimately composed of myriads of separate particles. Each of these little particles, no matter how quiet the air as a whole may seem, is in a state of intensely rapid movement. Picture to yourself incalculable myriads of little objects, each dashing about with a speed as great as that of a rifle bullet, and often indeed far greater. The little particles are so minute that it would take about fifty millions of them, placed side by side, to extend over a single inch. The smallest object which we can discern with a microscope is perhaps one hundred-thousandth of an inch in length. The little gaseous molecule would therefore require to possess a diameter about five hundred times greater than that which it actually has if it were to be large enough to admit of inspection by the utmost microscopic powers which we can bring to bear upon it. And yet, notwithstanding the fact that these particles are so extremely minute, we are able to reason about their existence, to discover many of their properties, and to ascertain the laws of their action in such a way as to throw light into many obscure places of nature. I do not, indeed, know any doctrine in modern science of a more instructive character than that which teaches us the composition of gases.” If this be true of air what then can be said of space, or ether, in which all worlds float as easily as the motes in a sunbeam; that space which transmits light everywhere with a precision that never varies? And what is light, indeed, but vibrations of ether from 400 trillions to 800 trillions per second, giving all the colors from violet to red? There is not an atom of ether in all space, so far as science can detect, that has ever ceased to vibrate, or ever will, with the startling rapidity above expressed.