It is well known that the code of Manu--which is the best exponent of Br[=a]hmanism--supposes a constant succession of religious guides through an infinite succession of cycles. These cycles are called Kalpas. Every Kalpa or Æon of time begins with a new creation, and ends with a universal dissolution of all existing things--including Brahm[=a], Vishnu, S´iva, gods, demons, men, and animals--into Brahm[)a], or the One sole impersonal self-existent Soul of the Universe. In the interval between each creation and dissolution there are fourteen periods, presided over by fourteen successive patriarchs or progenitors of the human race called Manus, who, as their name implies, are the authors of all human wisdom, and who create a succession of Sages and Saints (Rishis and Munis), for mankind's guidance and instruction. The Buddhists, also, have their cycles of time, presided over by twenty-four Buddhas, or 'perfectly enlightened men,' Gautama being (according to the Northern reckoning) the seventh of the series. Similarly the Jainas have their vast periods superintended by twenty-four Jinas, or 'self-conquering sages.' The notion is that alternate periods of degeneracy and amelioration succeed each other with symmetrical regularity. Each cycle embraces vast terms of years; for in the determination of the world's epochs Indian arithmeticians anticipated centuries ago the wildest hypotheses of modern European science. A single Kalpa, or Æon, of the Br[=a]hmans consists of 4,320,000,000 years. It is divided into a thousand periods of four ages (called Satya, Treta, Dv[=a]para, and Kali), under which there is gradual degeneration until the depths of degeneracy are reached in the Kali age. The Buddhist Kalpas are similar, but the Jaina cycles have a distinctive character of their own. They proceed in pairs, one of which is called 'descending,' (_Avasarpin[=i]_), and the other 'ascending,' (_Utsarpin[=i]_). Of these the descending cycle has six stages, or periods, each comprising one hundred million years, and called 'good-good,' 'good,' 'good-bad,' 'bad-good,' 'bad,' 'bad-bad,' during which mankind gradually deteriorates; while the ascending cycle has also six similar periods called 'bad-bad,' 'bad,' 'bad-good,' 'good-bad,' 'good,' 'good-good,' during which the human race gradually improves till it reaches the culminating pinnacle of absolute perfection. In illustration we are told to imagine a vast serpent, whose body, coiled round in infinite space in an endless circle, supports and guides the movement of the earth in its eternal progress. The head and tail of the serpent meet, and the notion is that the earth's movement alternates after the manner of the oscillating motion of a balance-wheel acted on by the coiling and uncoiling of a steel spring. First the earth moves from the head towards the tail in a downward course, and then reversing the direction moves upwards from the tail to the head. At present we are supposed to be in the descending cycle.