These Electrons are the tiny particles that pour forth from the pole in the Crookes' Tube, and constitute what are known as "X Rays," "Cathode Rays," "Becquerel Rays," etc. They also are the particles that are thrown off and emitted by Radium, and similar substances. They exist in the Atom, as explained, but also are found "free" and independent, and in the last condition or state are thrown off in the aforesaid "Rays," and by Radium, etc. So far the Corpuscles are known only as charged with Electricity, and the Electron only as a tiny charge of Electricity with which the Corpuscle is charged. But Science dreams of Corpuscles of Substance other than Electrons, in which case the old Occult teachings of "light dust" and "heat dust," etc., will be verified. The Electron contains a powerful charge of Electricity, as much in fact as an Atom, 1,000 to 150,000 times its size will carry. But Science is wondering how these highly charged particles manage to hold together in the Atom, so rigidly coherent as to appear indestructible. We think that we may get a hint at the matter a little later on in this book. Science, or at least _some_ scientists, are wondering whether the "whirl" or vibration of the Corpuscle might not produce that which we call "Electricity," and whether, when this motion is intensified, waves of Electricity will not be emitted. The writer fully agrees with this idea, and finds that it fits closely his own theories regarding Substance and Motion. But the reader is cautioned against falling into the error of many recent popular writers on the subject, some of whom have used terms calculated to convey the idea that the Corpuscle (Electron) is Electricity _itself_, rather than tiny particles of Substance called Corpuscles, charged with the unitary charge of Electricity, and therefore called "Electrons." But for that matter, Electricity is only known to us as associated with some form of Substance, and not as "a thing-in-itself." We shall see the reason for this as we proceed with this book. These Corpuscles are destined to play a most important part in the theories of Science from now on. They already have overturned several very carefully and laboriously erected theoretical structures--and many more will follow, among the many important ones evidently doomed to the dust-heap being the "vortex-ring" atomic theory, and other theories built upon the Etheric origin of Matter, and other theories concerning the Ether, even to the extent of breaking down the theory of The Ether itself, which theory had almost come to be considered a Law. We shall further consider the Corpuscles, and their qualities, characteristics, etc., in the next chapter, for they have an important bearing upon the theories advanced in the course of the study of this book. CHAPTER VI SUBSTANCE AND BEYOND