The tyrant was now in great trouble. He had neither gold nor gifts to give to Artaphernes as he had promised. He had wasted Persian money on a useless expedition, and he had made Megabates his enemy. What would Darius say when he heard these things? Aristagoras was afraid that the king would no longer allow him to be tyrant of Miletus. It seemed to Aristagoras that the only way to save himself from disgrace was to persuade the Greeks in Asia Minor to revolt against Darius and himself to become their leader. Now just at this time Histiaeus was more than ever determined to escape from the court of Susa. He thought if Aristagoras would but incite the Greeks to rebel, Darius would send him back to Miletus to restore order to the city. So while Aristagoras was still hesitating about rousing the citizens, a slave was shown into his presence. He came from Histiaeus, and said that his master had bidden him tell Aristagoras to shave off his hair and look at the message that was branded on his head. This was a strange way to send a message! But Histiaeus had been unable to think of any other way to tell Aristagoras what he wished him to do. So he had himself first shaved the head of his slave, and branded on it certain signs which meant that the tyrant was to revolt against the Persians. He had waited only until the slave’s hair had grown again, when he had at once sent him to Miletus. When Aristagoras looked at the slave’s head and learned that Histiaeus encouraged him to revolt, he hesitated no longer. He determined to rouse the Ionian Greeks, and he began with his own city Miletus. When he had assembled the citizens he told them that the time had come to throw off the Persian yoke. He then gave up his position as tyrant that Miletus might be made into a democracy. The example of Miletus was quickly followed by many other cities, and the Greeks were soon in open rebellion against Darius. CHAPTER XXXVIII SARDIS IS DESTROYED The Ionians knew that they would not be able to throw off the Persian yoke without help from their kinsfolk in Greece. So Aristagoras was appointed to go to Sparta to beg king Cleomenes to help the Ionians, who were of the same race as were he and his people. When Aristagoras reached Sparta he tried to tempt the king to help the Ionians by telling him of the wealth he might gain for himself. After Artaphernes was conquered at Sardis it would, he said, be an easy matter to go to Susa and seize the treasures of the great king. He then showed Cleomenes a thing he had never seen before--a map engraved in bronze. Aristagoras pointed out to him all the countries he might make his own if he would aid the Ionians in their revolt. The king listened and looked, then he dismissed the Greek, promising to think over the matter. In three days he sent for Aristagoras and asked him how long it took to journey from Ionia to Susa. ‘Three months,’ answered the messenger.