CHAPTER XIX.
THE ASCENT OF POPOCATEPETL CONTINUED.--LAST STEPS OF THE UPWARD JOURNEY.--LOSS OF LIFE ON THE MOUNTAIN.--HOW THREE INDIANS PERISHED.--THE CRATER OF THE VOLCANO.--HOW THE SULPHUR-MINERS EXIST.--DANGERS OF THE CRATER.--THE SOLFATARAS.--CAUGHT IN A STORM.--VIEW FROM THE SUMMIT.-- SCENES IN THE CRATER.--A RAPID DESCENT.--TOBOGGANING ON A GRAND SCALE.--HOW THE SULPHUR-MINE ORIGINATED.--NO ERUPTION IN SEVEN THOUSAND YEARS.--RETURN TO AMECAMECA.--EXPLORATION OF THE SURROUNDING COUNTRY.--TOMBS AND THEIR CONTENTS.-- CURIOUS INSTANCE OF PRESERVATION.--MONTE SACRO.--"MODERN ANTIQUITIES."--INDIANS WORSHIPPING THE VOLCANO.--EXPERIENCE WITH A RATERO. 296