But even these attempts and safeguards for keeping up the higher individuality of the human race fail to retard the course of the degeneration which Nature herself undergoes in the process of time. The fruit of Divine Cycle, spoken of in the beginning of the last Section, reaches an advanced stage of rottenness which marks the commencement of the Twilight Period of the Kali, called also Tamas or the Dark Age. The characteristics of Kali are symptoms of Nature filled with denser gloom than heretofore. The usual Kali, the last section of every Divine Cycle, is much more dense with Tama (darkness) than the one in which we are living now. The reason is that at the junction of the last Dwāpar and the present Kali, the fullest incarnation of the Supreme Deity, Sri Krishna himself, came on earth to dwell among men for a period of a hundred years. This Avatār and source of all Avatārs, this central Form-Point of All-Pervading Brahm, this Embodiment of Para-Brahm, is gracious enough to come and dwell among men on earth only once in 71 Divine cycles. We, the degenerated mortals of this Dark Age, are more fortunate than even humanity of many a Golden or Silver Age. The Supreme Lord sanctifies the soil of the earth-plane of every universe with the all-purifying touch of His Lotus-Feet by turns. The countless universes that spring out of Him and return in germ-form again into Him have the grace of His personal touch and supervision at appointed times. When Krishna comes to live in any of the universes, Nature therein is turned inside out, so that the inmost essence of it may flow over its surface and wash off all the causes of pollution. It has been recorded by the contemporary sages of Krishna-Leelā, the all-knowing sages who came down to earth from higher planes to act as scribes of the Lord's deeds, that by the coming of Krishna not only the 36,000 years, forming the junction period of Kali, was destroyed, but also almost half of the age of Kali proper, while the Lord's Rash-Dance with the Gopis absorbed a whole Kalpa covering 36,000 Divine cycles out of the age of Brahmā. The age of Brahmā is the age of the universe, that is to say, the age of Brahmā is equal to the duration of creation. Brahmā lives for 100 Brāhmic years and one Brāhmic year is made up of 360 Brāhmic days. One day of Brahmā is equal to one Kalpa, so is his night. A Kalpa is equal to 12,000,000 divine years. One night of Brahmā covers the same period of time so that one day and one night of Brahmā covers 24,000,000 divine years. Multiplying these figures by 360 we get 8,640,000,000 divine years, which is the span of one year of Brahmā. Multiplying these figures by 100 we get the span of Brahmā's age, 864,000,000,000 divine years, which being multiplied by 360 we get 311,040,000,000,000 human (lunar) years, the age of Brahmā, the duration of creation.