not exist. Some writers even on relativity, however, notably L. H. Bolton, in “Theory of Relativity”, say, “Aether so far from being dead is in process of being born”, and this view deserves consideration. The relation of the electron to the aether has been stated by various writers, for example: (1) Poincare speaks of the electron as “holes in the aether round which the aether presses, like eddies round a boat”. (2) Sir J.J.Thomson says that the properties of the electron are the same as the properties of the boundary of the electron. (3) Richardson goes so far as to say that “the real electron, the part which acts, is the surrounding aether, and the electron theory is the science of the properties of the aether of which the electric charges are local modifications”. There is not much difference between these views and that put forward by Mr. Jinarajadasa, namely, that the electron was a kind of turbine through which force flows, and the similar conception of Mr. F. T. Peirce, that the electrons were “three dimensional ‘sources’ and ‘sinks’ through which a fluid flows into and out of our physical space.” It is interesting, of course, to notice the difference also, for the attention of the scientist is fixed on the boundary (the form), while the Theosophist concentrates on the life or the ‘fluid’ flowing into and out of our physical space. It is this step—the acceptance of a fluid or force, whether discrete or not, which makes the holes in the aether—which has not been accepted by science, and probably will not be accepted for some time The electron, probably, is not quite over the borders of the physical plane, but the next step of science must lead there, for at present it is dealing with the etheric levels of the physical—an advance that has been made only since the discovery of radio-activity—or in other words, science in the study of radio-activity is actually dealing with etheric matter. Relation Between the Electron and Astral Matter. There is, however, another line of advance which the author would like to recommend for study. It is forced upon one’s notice when studying the quantum theory. The simplest example of this theory is the photo-electric effect, which may be stated thus: that if a substance is exposed to light of the proper frequency, there is an emission of electrons. This does not depend on the intensity of the light. The energy of the emitted electron is always in quanta, or