never being used, or, if employed at all, it was only as a core to what was faced or intended to be faced with the more durable material. There is one fact, however, which takes the Mexican monuments entirely out of the category of the works contemplated in this book. All the stones in Central America are carved. So far as is known, no rude stones were ever set up there, even the obelisks which stand alone, and look most like our menhirs in outline, are, like the Babas of the Steppes, all carved, most of them elaborately; and though it may be true that they may, at some remote period, have been derived from some such rude originals as are found in Europe, still till we find some traces of these in Central America they cannot be said to belong to the class of monuments of which we are now treating; nor can they be used as affording any analogies or illustrations which it would be worth while citing in this place.
Peru.
The same remarks apply to what we find in Peru with equal force, but not with equal distinctness. No one will, I presume, contend that there was any direct communication between Europe and the west coast of South America before the time of Columbus. Yet there are similarities between the masonry of the Peruvian monuments and those of the Pelasgi in Greece and Tyrrheni in Italy which are most striking, and can only be accounted for, at present, on the assumption that nations in the same stage of civilization, and using similar materials, arrive nearly at the same results. Perhaps we ought to add to this, provided they have some taint of the same blood iu their veins; and that, in this case, does not seem absolutely improbable.
Be this as it may, there are, so far as I know, no rude-stone monuments in Southern America. The ruins, for instance, of Tia Huanaco, which have often been quoted for their similarity to "Druidical remains," are as far removed as possible from that category. It is true that there are rows of squared stones that now stand apart, and in imperfect drawings look like our menhirs enclosing a square or circular space. In reality, however, as we learn from photographs, they are carefully squared stones, which
