There are two facts stated in Herodotus which may possibly account for this delay. Artaphernes had, perhaps, been only too eager in taking up the proposed design. Aristagoras had asked for one hundred ships; Artaphernes had given two hundred. This accession of numbers may have been actually embarrassing to Aristagoras, as rendering the expedition of such magnitude as to demand the presence of a larger percentage of the non-Greek element on board the fleet than he had either hoped for or reckoned upon. The ships and crews seem to have been Greek; ◆H. v. 32. _ad fin._◆ but it must be concluded from Herodotus’ account of the gathering of the expedition that a considerable Persian force was embarked. So long as this force was with the fleet such a measure as that with which the revolt was opened could hardly have been adopted with success, and would, indeed, hardly have been attempted. The conspirators would have to wait until the non-Greek element had disembarked and gone up country, and then would have to strike quickly before the fleet was dispersed by official orders. Another possible reason for this delay is that Aristagoras wished to defer the outbreak until the close of the campaigning season, when he would have time to make preparations to meet the coming storm. The four months’ duration of the fruitless siege of Naxos would be in that case all in his favour. He had to waste time at Naxos in order to gain it on the Asiatic coast. A sturdy defence on the part of the Naxians was the very thing from which he had most to hope. Did Megabates or Aristagoras send the fatal message? The tale of “the man with the tattooed head” was evidently a celebrated tale of the time. There is no reason whatever to suspect the truth of it. In the plot as given in Herodotus it plays the part of a second motive. All that Herodotus knows of the message is that it “signified revolt,” and that Aristagoras imparted it to his fellow-conspirators. The method of communication implies that the message cannot indeed have been a long one. It must, however, be regarded as an extraordinary coincidence that it should have arrived in the very brief period which must have intervened between the return from Naxos and the first act of insurrection. It must, in order to be effective, have suggested some powerful motive for revolt. It cannot possibly be imagined that Aristagoras wanted Histiæus back on the coast. The Greek conspirators were very unlikely to desire the return of the favoured friend of the great king, except on one assumption, namely, that Histiæus had been in the plot before ever he made the involuntary journey to Susa. But whatever the full contents of the message, whatever the reasons which made it contribute to the determination of the conspirators, there are, as has been already said, no grounds whatever for doubting that the message did come. The question is as to the time at which it came.