48. After this Darius began to make trial of the Hellenes, what they meant to do, whether to make war with him or to deliver themselves up. He sent abroad heralds therefore, and appointed them to go some to one place and others to another throughout Hellas, bidding them demand earth and water for the king. These, I say, he sent to Hellas; and meanwhile he was sending abroad other heralds to his own tributary cities which lay upon the seacoast, and he bade them have ships of war built and also vessels to carry horses. 49. They then were engaged in preparing these things; and meanwhile when the heralds had come to Hellas, many of those who dwelt upon the mainland gave that for which the Persian made demand, 872