Sri Yukteswar discovered the mathematical application of a 24,000 year equinoctial cycle to our present age. The cycle is divided into as "ascending arc" and a "descending arc," each of 12,000 years. Within each "arc" fall four Yuga's or ages, called "kali," "dwapara," "treta," and "Satya," corresponding to the Greek ideas of "Iron," bronze, silver and golden ages. The last "kali yoga" or iron age of the "ascending arc" started about A.D. 500, the iron age, 1,200 years in duration is a span of materialism; it ended about A.D. 1700. That year ushered in "dwapara yuga," a 2400 year period of electrical and atomic "energy developments;" the age of telegraphy, radio, airplanes and other space-annihilators. The 3600 year period of "treta yoga" will start in A.D. 4100; the age will be armed by common knowledge of telepathic communications and other time-annihilators. During the 4800 years of "satya yoga," final age in an "ascending arc," the intelligence of man will be highly developed; he will work in harmony with the divine plan.
* THE EARTH (SUBTLE ENERGY, THE "FOUNDATION" OF ALL CREATION) WAS WITHOUT FORM AND VOID AND DARKNESS WAS ON THE FACE OF THE DEEP.