CHAPTER XXVI.. Popocatapetl and Other Volcanoes of Mexico and Central America.

Popocatapetl and Other Volcanoes of Mexico and Central America.

Mexico is very largely a vast table-land, rising through much of its extent to an elevation of from 7,000 to 8,000 feet above sea-level, and bounded east and west by wide strips of torrid lowlands adjoining the oceans. It is crossed at about 19 degrees north latitude by a range of volcanic mountains, running in almost a straight line east and west, upon which are several extinct volcanic cones, and five active or quiescent volcanoes. The highest of these is Popocatapetl, south of the city of Mexico and nearly midway between the Atlantic and Pacific.

East of this mountain lies Orizabo, little below it in height, and San Martin or Tuxtla, 9,700 feet high, on the coast south of Vera Cruz. West of it is Jorullo, 4,000 feet, and Colima, 12,800, near the Pacific coast. The volcanic energy continues southward toward the Isthmus, but decreases north of this volcanic range. These mountains have shown little signs of activity in recent times. Popocatapetl emits smoke, but there is no record of an eruption since 1540. Orizabo has been quiet since 1566. Tuxtla had a violent eruption in 1793, but since then has remained quiescent. Colima is the only one now active. For ten years past it has been emitting ashes and smoke. The most remarkable of these volcanoes is Jorullo, which closely resembled Monte Nuovo, described in