The greatness of the chronological discrepancy will be best appreciated when it is pointed out that Herodotus in one chapter ascribes the reduction of the revolt on the Hellespont and in Caria to a period which, ◆H. v. 103.◆ if the data of a previous chapter be correct, must have been from four to six months before the outbreak of the insurrection in those regions. Of the two series of chronological data the earlier one is by far the more trustworthy. It is connected with the outbreak of the revolt by a continuous chain of events whose dates can be fixed with reasonable probability. The later chronological series is not merely in disaccord with the previous one, but, if adhered to, renders the whole story of the revolt incomprehensible. The reader wanders amid a maze of circumstances without cause and without effect. The main incidents attendant on the suppression of the revolt on the continent of Asia Minor seem, in so far as they are told, to be correctly told by Herodotus, in all save their chronological setting. The modern world has, at any rate, no other evidence on the subject. On the question of fact the position must be accepted. On the question of chronology, Herodotus must be corrected by his own chronological statements, and by the strong presumptive evidence of his own statements of fact. The direct evidence makes it quite clear that the measures undertaken by the Persians for the suppression of the widespread revolt were not undertaken at the time to which he attributes them. His statements of fact render it possible to form some conclusion as to when they were undertaken. It is not possible to assign an earlier date than the summer of 497 to the despatch of the Ionian fleet to Cyprus. Herodotus himself says that the General Council of the Ionians were prompt in their decision to send it. It may reasonably be concluded that the circumstances of the insurrection on Asia Minor were at the time in a favourable condition. The lack of hesitation would be otherwise incomprehensible, inasmuch as the combination of the cities against attack was, from the vary nature of things, dependent upon the fleet. It is not a mere assumption to say that the circumstances must have been favourable. The formidable character of the rising had been well-nigh quadrupled by the accession of the Hellespont, Caria, and Cyprus to the insurrection in the earlier half of the year 497. The forces which Artaphernes had at his disposal were sufficient to save the citadel of Sardes in 498, and to inflict some sort of reverse on the retreating Ionians at Ephesus; but were they sufficient to cope with the infinitely more dangerous situation in the early months of the following year? #PERSIAN REINFORCEMENTS.#