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THE POPULAR SCIENCE MONTHLY.
Fig. 5.—Pyramids of San Juan Teotihuacan.
At Papantla, in the State of Vera Cruz, is a pyramid remarkable for its symmetry, built of immense stones of porphyry, regularly cut and finely polished, many of which are covered with hieroglyphics, with carvings of serpents and crocodiles.
Fig. 6.—Toltec Palace at Tula.
The Museum of the city of Mexico contains a sacrificial stone, and a number of the idols of Aztec worship. We give cuts of two of these idols—Quetzalcoatl, the chief god of the people, and a feathered serpent.
The Marquis de Nadaillac, who has lately reviewed the whole sub-
