CHAPTER XVII.

ICE CAVES AND WIND-HOLES.

Ice-caves of St. Georges and St. Livres—Beautiful Ice- stalagmites in the Cave of La Baume—The Schafloch—Ice Cataract in the Upper Glacière of St. Livres—Ice Cavern of Eisenerz—The Cave of Yeermalik—Volcanic Ice-caves— Æolian Caverns of Terni—Causes of the low temperature of Ice-caves 192