CHAPTER XXVIII.
"THE MYSTERIOUS CITY;" STORIES AND RUMORS CONCERNING IT.-- ACCOUNTS OF STEPHENS AND MORELET.--FATE OF TWO YOUNG AMERICANS.--DON PEDRO VELASQUEZ.--CARMEN AND CAMPEACHY.-- UNDERGROUND CAVES.--HOW LOGWOOD IS GATHERED; ITS COMMERCIAL IMPORTANCE.--THE QUEZAL AND ITS WONDERFUL PLUMAGE.--SNAKES AND SNAKE STORIES.--TRAVELLERS' TALES.--PROGRESO AND SISAL.--HOW THE YUCATAN RAILWAY WAS BUILT.--AGAVE SISALANA.-- DISCOVERY AND CONQUEST OF YUCATAN.--A FEROCIOUS POPULATION.-- REBELLIOUS INDIANS IN YUCATAN; HOW THEY TREAT VISITORS.-- TOWNS AND VILLAGES DEPOPULATED. 439