More important, as being doubtless connected with the discovery of the principle in hydrostatics which bears his name and the foundation by him of that whole science, is the story of Hiero's reference to him of the question whether a crown made for him and purporting to be of gold, did not actually contain a proportion of silver.
Hiero's rule was kindly and enlightened, combining good order with a fair share of liberty and self-government.
Popular outbreak and more bloodshed; the conspirators were put to death and Hiero's family was murdered; whilst the Carthaginian faction, under the pretence of delivering the city from its tyrants, got the upper hand and drew the citizens into open defiance of Rome.
The result was revolt against Rome, the great siege and capture of the city, the addition of Hiero's kingdom to the Roman province.
Now Hiero first came to the front in 275 B.C. when he was made " General " (QTpaT27y6s) : Theocritus speaks of his achievements as still to come, and the silence of the poet would show that Hiero's marriage to Philistis, his victory over the Mamertines at the Longanus and his election as " King " (#ao-Aein), events which are ascribed to 270 B.C., had not yet taken place.