Some have credited him with a work entitled Ges Periodos ("Travels round the Earth"), in two books, one on Europe, the other on Asia, in which were described the countries and inhabitants of the known world, the account of Egypt being particularly comprehensive; the descriptive matter was accompanied by a map, based upon Anaximanderís map of the earth, which he corrected and enlarged. The authenticity of the work is in doubt. The only certainly genuine work of Hecataeus was the Genealogiai, a systematic account of the traditions and mythology of the Greeks.
He was probably the first to attempt a serious prose history and to employ critical method to distinguish myth from historical fact, though he accepts Homer and other poets as trustworthy authorities. Herodotus, though he once at least controverts his statements, is indebted to Hecataeus for the concept of a prose history.
Based on the 1911 Britannica article