Rhodes was laid out in 408 B.C., thirty-five years after the planting of Thurii and seventy years after the approximate date of the birth of Hippodamus.

It is conceivable but not altogether probable that Hippodamus was still planning towns in his extreme old age, nor is it, on political grounds, very likely that he would be planning in Rhodes.

As, however, we do not know the real date of his birth, and as Strabo does not specifically mention his name, certainty is unattainable.[18] [18] On Hippodamus see K.F.Hermann, _de Hippodamo Milesio_ (Marburg, 1841) and Erdmann, _Philologus_ xlii.

193-227, and _Programm Protestant.

Gymnasium zu Strassburg_, 1883.