Another difficulty arises from the fact that the Homeric poems certainly contemplate a much wider use of iron than can be found among the remains of the Mycenaean people. But the weight of this objection may easily be exaggerated. Certainly the equipment contemplated for the Homeric heroes is in most cases of bronze, though the well-known line from the Odyssey, 'iron does of itself attract a man,' bears witness to a time when iron had become the almost universal fighting metal. But even in some of the Mycenaean tombs iron appears in the shape of finger-rings; and in East Cretan tombs of the latest Minoan period iron swords have been found. And if, as is generally agreed, the Homeric poems represent the work of several bards covering a considerable period of time, there is nothing out of the way in the supposition that, while the earlier writers represented bronze as the material for weapons, because it was actually so in their time, the later ones, writing at a period when iron was largely superseding, but had not altogether superseded, the older metal, should, while clinging in general to the old poetic word used by their predecessors, occasionally introduce the name of the metal which was becoming prevalent in their day. From this point of view the difficulty seems to disappear. The Homeric age proper is one of bronze-using people; but, in the later stages of the development of the poems, iron makes its appearance, just as it had been gradually doing in the generally bronze-using Mycenaean civilization. The same remark applies to the differences of equipment between the warriors of the Mycenaean and those of the Homeric period. The Mycenaeans used the great hide-shield, either oblong or 8-shaped, covering its bearer from head to foot, with a leather cap for the head, and no defensive armour of metal. In the Iliad, on the other hand, what is obviously contemplated in general is a metal helmet, a metal cuirass, and a comparatively small round shield. But, again, in later Mycenaean work, such as the famous Warrior Vase, there is evidence of the use of the small round shield, while, moreover, in some parts of the poem there are evidences of the use of the true Mycenaean shield 'like a tower.' Periphetes of Mycenae is slain by Hector owing to his having tripped over the lower edge of his great shield, and his slayer himself bears a shield of no small proportions. 'So saying, Hector of the glancing helm departed, and the black hide beat on either side against his ankles and his neck, even the rim that ran uttermost about his bossed shield.' So that the poems represent a gradual development in the use of armour which may not unfairly be compared with the similar development traceable in the Mycenaean remains.