or ox-unit. It seems most unlikely that a people long acquainted with both gold and silver could not devise for themselves a simple method of making some convenient number of silver pieces be equivalent to one gold, and that, on the contrary, having once obtained a certain standard fixed for silver in Asia Minor, at a time when gold was to silver as 13:1, they would blindly cleave to this standard, no matter how great a change took place in the relation of the metals. In face of the statements of Xenophon and Polybius already quoted and the fact that Solon deliberately constructed a new silver standard, it is simply impossible to believe such a doctrine.
On the opposite shore from Thrace lay the flourishing city of Cyzicus. This wealthy community commenced to issue electrum staters and hectae in the 5th century B.C., if not earlier, the former being about 252 grs., the latter 41 grs. These electrum staters have been shown by Professor Gardner to have contained gold and silver in about equal proportions51. This most important fact, taken in connection with the literary evidence derived from Xenophon and Demosthenes, makes it probable that the Cyzicene stater of 252 grs. was counted equal to a Daric of 130 grs. of pure gold52. “These coins of Cyzicus,” says Mr Head, “together with the Persian Darics formed the staple of the gold currency of the whole ancient world, until such time as they were both superseded by the gold staters of Philip and Alexander the Great53.”