47. In the agitation caused by the displacement of the waters, many animals have perished; others, in order to escape inundation, have withdrawn to the high elevations, into caves and crevasses, where they have perished in masses, perhaps by famine, perhaps by devouring one another, or by the flowing of the water into the places where they have taken refuge, and from whence they could not escape. Thus is explained the cause for the great quantity of bones of animals, carnivorous and otherwise, which are found mixed-up in certain caves, named by reason of this “bone caverns.” They are found most frequently under the stalagmites. In a few of them the bones seem to have been drawn there by the current of the waters. *
* A great number of similar caverns have been discovered, of which some are quite extensive. There exist some in Mexico which are many miles in extent. That of Adelsberg, in Carniola, Austria, is no less than nine miles. One of the most remarkable is the Gailenreuth, in Wurtemberg. There are many in France, England, Germany, Sicily, and other countries of Europe.