The beauty of the masonry and sculpture show that the people who erected this monument had made no small progress in the arts.

We must remember, too, that they had no iron, but laboriously cut and polished the hardest granite and porphyry with instruments of stone and bronze; we can hardly tell how.
The resemblances which people find between Assyrian and Egyptian sculptures and the American monuments are of little value, and do not seem sufficient to ground any argument upon.

When slightly civilized races copy men, trees, and animals in their rude way, it would be hard if there were not some resemblance among the figures they produce.

With reference to their ornamentation, it is true that what is called the "key-border" is quite common in Mexico and Yucatan, and that on this very pyramid the panels are divided by a twisted border, which would not be noticed as peculiar in a "renaissance" building.

But the model of this border may have been suggested--on either side of the globe--by creepers twined together in the forest, or by a cord doubled and twisted, such as is represented in one of the commonest Egyptian hieroglyphs.
The cornice which finishes the first storey of the pyramid is a familiar pattern, but nothing can be concluded from these simple geometrical designs, which might be invented over and over again by different races when they began to find pleasure in tracing ornamental devices upon their buildings.