Arma antiqua manus ungues dentesque fuerunt Et lapides et item silvarum fragmina rami, Et flamma atque ignes, postquam sunt cognita primum. Posterius ferri vis est, aerisque reperta. Et prior aeris erat, quam ferri cognitus usus, etc. Lucretius, v. 1283. Perhaps, as Munro suggests, Lucretius was thinking of Hesiod; but it does not seem improbable that in both cases there may have been a genuine tradition that their ancestors used bronze tools and weapons before iron, since the change was comparatively recent, and sundry religious observances tended to perpetuate the memory of it.] [Sidenote: "Civilizations" of Mexico and Peru.] This brilliant classification of the stages of early culture will be found very helpful if we only keep in mind the fact that in all wide generalizations of this sort the case is liable to be somewhat unduly simplified. The story of human progress is really not quite so easy to decipher as such descriptions would make it appear, and when we have laid down rules of this sort we need not be surprised if we now and then come upon facts that will not exactly fit into them. In such an event it is best not to try to squeeze or distort the unruly facts, but to look and see if our rules will not bear some little qualification. The faculty for generalizing is a good servant but a bad master. If we observe this caution we shall find Mr. Morgan's work to be of great value. It will be observed that, with one exception, his restrictions leave the area of civilization as wide as that which we are accustomed to assign to it in our ordinary speaking and thinking. That exception is the case of Mexico, Central America, and Peru. We have so long been accustomed to gorgeous accounts of the civilization of these countries at the time of their discovery by the Spaniards that it may at first shock our preconceived notions to see them set down as in the "middle status of barbarism," one stage higher than Mohawks, and one stage lower than the warriors of the Iliad. This does indeed mark a change since Dr. Draper expressed the opinion that the Mexicans and Peruvians were morally and intellectually superior to the Europeans of the sixteenth century.[30] The reaction from the state of opinion in which such an extravagant remark was even possible has been attended with some controversy; but on the whole Mr. Morgan's main position has been steadily and rapidly gaining ground, and it is becoming more and more clear that if we are to use language correctly when we speak of the civilizations of Mexico and Peru we really mean civilizations of an extremely archaic type, considerably more archaic than that of Egypt in the time of the Pharaohs. A "civilization" like that of the Aztecs, without domestic animals or iron tools, with trade still in the