Time, in Hindawi _Kal_, is a measure of the movement of the great sphere, according to the philosophers of Greece and Persia. The author has also heard from the Brahmans, and in conformity to the opinions ascribed to the most distinguished persons of their caste, it is stated in the work entitled _Muadan Ushshaffai Iskandari_ (a selection taken from several Hindi medical treatises), that time, according to the Hindu philosophers, is a necessarily-subsisting immaterial substance, durable, incorporeal, that will ever last, and admits not of annihilation. Time has been divided into three kinds, namely, past, present, and future; but, as in their opinion time admits neither of alteration nor extinction, these divisions are not in reality its attributes, although correctly used when applied to acts performed in time. According to the succession of acts, they figuratively describe time as past, present, and future; as in reference to the solar revolutions and phases, they call it by the names of days, nights, months, years, and seasons: in short, they have so many intricate distinctions of this same nature, that the mere attempt to enumerate them would fill several volumes. They all agree that this world is to continue for four ages: the first, the _Rast yug_, “the righteous,”[65] which lasted one million seven hundred and twenty-eight thousand common years; during which, all human beings, high and low, exalted and humble, princes and servants, adhered to the practice of righteousness and truth, passing their glorious existence in a manner conformable to the divine will, and devoted to the worship of the Almighty; the duration of human life in this age extended to one hundred thousand common years. The second, the _Treta Yug_,[66] which lasted one million two hundred and ninety-six thousand common years: during this period, three-fourths of the human race conformed to the divine will, and the natural duration of life extended to ten thousand years. The third was the _Dwapar Yug_,[67] which lasted eight hundred and sixty-four thousand ordinary years, during which one half the human race performed good works and their life was limited to a thousand years. The fourth is the _Kali Yug_,[68] or “iron age,” which is to last four hundred and thirty-two thousand years, during which three-fourths of the human race will be immersed in sin, infatuation, and evil works, and the term of human life reduced to a hundred and twenty ordinary years. These four ages (4,320,000 years) they call a _Chakra_, and seventy-one Chakras a _Manwantar_; on the expiration of seventy-one Chakras, there elapses one day of the life of India, the ruler of the upper world; and on the expiration of fourteen Manwantars, reckoned according to the preceding calculation, one day of Brahma’s life is terminated.