When the planet in its approach to the sun passes over the line where the centripetal and centrifugal force completely neutralize each other, and is only acted on by the centripetal force, it rushes towards the sun with a gradually increasing velocity, and is finally mixed up with the mass of the sun's body. This is the case of a complete adept. Again, when the planet in its retreat from the sun reaches a point where the centrifugal force becomes all-powerful, it flies off in a tangential direction from its orbit, and goes into the depths of void space. When it ceases to be under the control of the sun, it gradually gives up its generative heat, and the creative energy that it originally derived from the sun, and remains a cold mass of material particles wandering through space until the mass is completely decomposed into atoms. This cold mass is compared to the fifth principle under the conditions above noticed, and the heat, light, and energy that left it are compared to the sixth and seventh principles. Either after assuming a new orbit or in its course of deviation from the old orbit to the new, the planet can never go back to any point in its old orbit, as the various orbits lying in different planes never intersect each other. This figurative representation correctly explains the ancient Brahmanical theory on the subject. It is merely a branch of what is called the Great Law of the Universe by the ancient mystics. --T. Subba Row Appendix Note I. In this connection it will be well to draw the reader's attention to the fact that the country called "Si-dzang" by the Chinese, and Tibet by Western geographers, is mentioned in the oldest books preserved in the province of Fo-kien (the headquarters of the aborigines of China) as the great seat of occult learning in the archaic ages. According to these records, it was inhabited by the "Teachers of Light," the "Sons of Wisdom" and the "Brothers of the Sun." The Emperor Yu the "Great" (2207 B.C.), a pious mystic, is credited with having obtained his occult wisdom and the system of theocracy established by him--for he was the first one to unite in China ecclesiastical power with temporal authority--from Si-dzang. That system was the same as with the old Egyptians and the Chaldees; that which we know to have existed in the Brahmanical period in India, and to exist now in Tibet--namely, all the learning, power, the temporal as well as the secret wisdom were concentrated within the hierarchy of the priests and limited to their caste. Who were the aborigines of Tibet is a question which no ethnographer is able to answer correctly at present. They practice the Bhon religion, their sect is a pre-and anti-Buddhistic one, and they are to be found mostly in the province of Kam. That is all that is known of them. But even that would justify the supposition that they are the greatly degenerated descendants of mighty and wise forefathers.