Although I have said so much about Dionusus, Sesostris, and other great travellers, I cannot quit the subject till I have taken notice of Cadmus: for his expeditions, though not so extensive as some, which I have been mentioning, are yet esteemed of great consequence in the histories of antient nations. The time of his arrival in Greece is looked up to as a fixed æra: and many circumstances in chronology are thereby determined. He is commonly reputed to have been a Phenician by birth; the son of Agenor, who was the king of that country. He was sent by his father's order in quest of his sister Europa; and after wandering about a long time to little purpose, he at last settled in Greece. In this country were many traditions concerning him; especially in Attica, and Bœotia. The particular spot, where he is supposed to have taken up his residence, was in the latter province at Tanagra upon the river Ismenus. He afterwards built Thebes: and wherever he came, he introduced the religion of his country. This consisted in the worship of [1060]Dionusus; and in the rites, which by the later Greeks were termed the Dionusiaca. They seem to have been much the same as the Cabyritic mysteries, which he is said to have established in Samothracia. He fought with a mighty dragon; whose teeth he afterwards sowed, and produced an army of men. To him Greece is supposed to have been indebted for the first introduction of [1061]letters; which are said to have been the letters of his country Phenicia, and in number sixteen. He married Harmonia, the daughter of Mars and Venus: and his nuptials were graced with the presence of all the Gods, and Goddesses; each of whom conferred some gift upon the bride. He had several children; among whom was a daughter Semele, esteemed the mother of Bacchus. After having experienced great vicissitudes in life, he is said to have retired with his wife Harmonia to the coast of Illyria, where they were both changed to serpents. He was succeeded at Thebes by his son Polydorus, the father of Labdacus, the father of Laius. This last was the husband of Jocasta, by whom he had Œdipus.