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Rh at these three places, and the Mexican National Railway crosses the Mexican Central at Huehuetoca.

The elevation of this point is 7,533 feet above the sea-level, according to Humboldt, or about 140 feet higher than the measurement of the railway-engineers. In general, it may be said that the distinguished German traveler and scientist, in taking altitudes with his barometer throughout the country, computed the elevations of the various points at somewhat higher figures than those of the engineers of the several railroads. Wheat and maize are cultivated in the vicinity of Huehuetoca.