E CAVE OF YEERMALIK, IN KOONDOOZ ...................240
THE SURTSHELLIR, IN ICELAND ..........................244
THE GYPSUM CAVE OF ILLETZKAYA ZASTCHITA, ORENBURG ....249
THE ICE-CAVERN ON THE PEAK OF TENERIFFE ..............253

CHAPTER XVI.

BRIEF NOTICES OF VARIOUS ICE-CAVES .....................256

CHAPTER XVII.

HISTORY OF THEORIES RESPECTING THE CAUSES OF
SUBTERRANEAN ICE .......................................282

CHAPTER XVIII.

ON THE PRISMATIC STRUCTURE OF THE ICE IN GLACIERES .....300

CHAPTER XIX.

ON THE MEAN TEMPERATURE OF THE REGIONS IN WHICH
SOME OF THE GLACIERES OCCUR ............................308

APPENDIX ...............................................313

LIST OF ILLUSTRATIONS.

ICE-COLUMNS IN THE GLACIERE OF LA GENOLLIERE ...........6

ENTRANCE TO THE GLACIERE OF S. GEORGES .................24

VERTICAL SECTIONS OF THE GLACIERE OF S. GEORGES ........26

LOWER GLACIERE OF THE PRE DE S. LIVRES .................39

SECTION OF THE LOWER GLACIERE OF THE
PRE DE S. LIVRES .......................................41

SECOND CAVE OF THE UPPER GLACIERE OF THE PRE DE
S. LIVRES ..............................................50

VERTICAL SECTIONS OF THE UPPER GLACIERE OF THE PRE
DE S. LIVRES ...........................................52

VERTICAL SECTION OF THE GLACIERE OF GRACE-DIEU, NEAR
BESANCON ...............................................77

BATH IN THE DOUBS, AT BESANCON .........................91

VERTICAL SECTION OF THE GLACIERE OF MONTHEZY, IN THE
VAL DE TRAVERS .........................................108

GROUND PLAN OF THE GLACIERE OF MONTHEZY ................110

VERTICAL SECTION OF THE GLACIERE OF GRAND ANU, NEAR
ANNECY .................................................173

ICE-CAVE IN THE SURTSHELLIR ............................248

* * * * *

CHAPTER I.

THE GLACIERE OF LA GENOLLIERE, IN THE JURA.

In the summer of 1861, I found myself, with some members of my family,
in a small rustic _pension_ in the village of Arzier, one of the highest
villages of the pleasant slope by which the Jura passes down to the Lake
of Geneva. The son of the house was an intelligent man, with a good
knowledge of the natural curiosities which abound in that remarkable
range of hills, and under his guidance we saw many strange things. More
than once, he spoke of