LIST OF ILLUSTRATIONS.[ICE-COLUMNS IN THE GLACIÈRE OF LA GENOLLIÈRE]6[ENTRANCE TO THE GLACIÈRE OF S. GEORGES]24[VERTICAL SECTIONS OF THE GLACIÈRE OF S. GEORGES]26[LOWER GLACIÈRE OF THE PRÉ DE S. LIVRES]39[SECTION OF THE LOWER GLACIÈRE OF THE PRÉ DE S. LIVRES]41[SECOND CAVE OF THE UPPER GLACIÈRE OF THE PRÉ DE S. LIVRES]50[VERTICAL SECTIONS OF THE UPPER GLACIÈRE OF THE PRÉ DE S. LIVRES]52[VERTICAL SECTION OF THE GLACIÈRE OF GRÂCE-DIEU, NEAR BESANÇON]77[BATH IN THE DOUBS, AT BESANÇON]91[VERTICAL SECTION OF THE GLACIÈRE OF MONTHÉZY, IN THE VAL DE TRAVERS]108[GROUND PLAN OF THE GLACIÈRE OF MONTHÉZY]110[VERTICAL SECTION OF THE GLACIÈRE OF GRAND ANU, NEAR ANNECY]173[ICE-CAVE IN THE SURTSHELLIR]248