It is a matter of common knowledge among mystics that the evolutionary career of mankind is indissolubly bound up with the divine hierarchies who rule the planets and the signs of the Zodiac, and that passage of the Sun and the planets through the twelve signs of the Zodiac, marks man's progress in time and in space. Therefore it is not to be wondered at, that in the course of their investigations into the spiritual development of mankind, the writers have also encountered much that deals with the Zodiac which is the boundary of our evolutionary sphere at the present time. So much has been perceived in the memory of nature that sheds light upon obscure passages of the Bible, that notes have been made from time to time of different points, but how to collect and collage these dissociated writings into a united whole, has been a great problem for a long time. Even now, the writers know and feel that what they are bringing forth is only a very, very weak attempt to set before the students that great body of facts which have come to them through the memory of nature. They feel, however, that this will give a new and more profound meaning to the old symbols, and that by passing on what has been found they put themselves in line to receive more light. Concerning the future evolution of planets; the Rosicrucian Cosmo-Conception teaches, on page 256, that "when the beings upon the planet have evolved to a sufficient degree, the planet becomes a Sun, the fixed center of the Solar System. When the beings there have evolved to a still greater degree, and consequently it has reached its maximum of brilliancy, it breaks up into a Zodiac and becomes, so to speak, the womb of a new Solar System. Thus the Great hosts of Divine beings who, until then, were confined upon that Sun gain freedom of actions upon a great number of stars whence they can affect, in different ways, the system which grows up within their sphere of influence. The planets or many-bearing worlds within the Zodiac are constantly being worked upon by these forces but in various ways according to the stage they have reached in evolution. Our Sun could not have become a sun until it set out from itself all the beings who were not sufficiently evolved to endure the high rate of vibration and the great luminosity of the beings who were qualified for that evolution. All the beings upon the different planets would have been consumed had they remained in the Sun. This visible Sun, however, though it is a place of evolution for beings vastly above man, is not by any means, the Father of other planets, as material science supposes. On the contrary, it is itself an emanation from the central Sun, which is the invisible source of all that IS in our solar system." "Our visible Sun is but the mirror in which are reflected the Rays of energy from the Spiritual Sun, the real Sun is as invisible as the real man." From this teaching it is apparent that the great spiritual hierarchies which are now guiding our evolution, have had their training for this path in previous schemes of manifestation, also that what they are now doing, we shall some day do for others. Already the foremost among our race are treading the path of initiation, and have thereby advanced into stages, far beyond the general status of our present humanity. It has been learned that those who have gone through the Mercurial School of the lesser Mysteries, and have graduated from the School of the Greater Mysteries are now preparing human evolution for the Jupiter Period. They have entered the planet Jupiter, by way of one of the Moons, which serves as a stepping stone. Others there are, unfortunately, who have gone the other way. We read in the Rosicrucian Cosmo-Conception, that even as the whole population of the earth was at one time expelled from the present Sun because of their inability to keep up with the vibrations of the beings thereon, thus hindering them and being hindered themselves, so also it becomes necessar