Vishvamitra was the son of Gadhi (of the race of Kausika), King of Gadhipura, and contemporary of Ambarisha, King of Ayodhya or Oudh, the fortieth prince from Ikshwaku; consequently about two hundred years anterior to Rama. This event therefore, whence we infer that the system of castes was approaching perfection, was probably about one thousand four hundred years before Christ. =Dates of the Genealogies.=—If proof can be given that these genealogies existed in the days of Alexander, the fact would be interesting. The legend in the Puranas, of the origin of the Lunar race, appears to afford this testimony. Vyasa, the author of the grand epic the Mahabharata, was son of Santanu (of the race of Hari),[2.2.13] sovereign of Delhi, by Yojanagandha, a fisherman’s daughter,[2.2.14] [30] consequently illegitimate. He became the spiritual father, or preceptor, of his nieces, the daughters of Vichitravirya, the son and successor of Santanu. =The Herakles Legend.=—Vichitravirya had no male offspring. Of his three daughters, one was named Pandaia[2.2.15]; and Vyasa, being the sole remaining male branch of the house of Santanu, took his niece, and spiritual daughter, Pandaia, to wife, and became the father of Pandu, afterwards sovereign of Indraprastha. Arrian gives the story thus: "It is further said that he [Herakles][2.2.16] had a very numerous progeny of children born to him in India ... [31] but that he had only one daughter.[2.2.17] The name of this child was Pandaia, and the land in which she was born, and with the sovereignty of which Herakles entrusted her, was called after her name Pandaia" (_Indika_, viii.). This is the very legend contained in the Puranas, of Vyasa (who was Hari-kul-es, or chief of the race of Hari) and his spiritual daughter Pandaia, from whom the grand race the Pandavas, and from whom Delhi and its dependencies were designated the Pandava sovereignty. Her issue ruled for thirty-one generations in direct descents, or from 1120 to 610 before Christ; when the military minister,[2.2.18] connected by blood, was chosen by the chiefs who rebelled against the last Pandu king, represented as “neglectful of all the cares of government,” and whose deposition and death introduced a new dynasty. Two other dynasties succeeded in like manner by the usurpation of these military ministers, until Vikramaditya, when the Pandava sovereignty and era of Yudhishthira were both overturned.