CONTENTS, 
xxiii 
PAGE 
Landes — Fresh-water limestone of Saucats — Position of the limestone of 
Blaye — Eocene strata in the Bordeaux basin — Inland cliff near Dax — Strata 
of Piedmont — Superga — Valley of the Bormida — Molasse of Switzerland — 
Basin of Vienna — Styria— Hungary — Volhynia and Podolia-^-Montpellier 202 
CHAPTER XVI. 
Miocene alluviums — Auvergne— * Mont Perrier — Extinct quadrupeds — 
Velay — Orleanais — Alluviums contemporaneous with Faluns of Touraine — 
Miocene fresh-water formations — Upper Val d'Arno — Extinct mammalia — 
Coal of Cadibona — Miocene volcanic rocks — Hungary — Transylvania — Styria 
— Auvergne— Velay . • . . . <, 217 
CHAPTER XVII. 
Eocene period— Fresh-water formations — Central France — Map — Limagne 
d' Auvergne — Sandstone and conglomerate — Tertiary Red marl and sandstone 
like the secondary ' new red sandstone' — Green and white foliated marls — 
Indusial limestone — Gypseous marls — General arrangement and origin of the 
Travertin — Fresh-water formation of the Limagne — Puy en Velay — Analogy 
of the strata to those of Auvergne — Cantal — Resemblance of Aurillae lime- 
stone and its flints to our upper chalk— Proofs of the gradual deposition of 
marb— Concluding remarks . 225 
CHAPTER XVIII. 
Marine formations of the Eocene period — Strata of the Paris basin how far 
analogous to the lacustrine deposits of Central France — Geographical con- 
nexion of the Limagne d' Auvergne and the Paris basin — Chain of lakes in 
the Eocene period — Classification of groups in the Paris basin — Observations 
of M. C. Prevost — Sketch of the different subdivisions of the Paris basin — 
Contemporaneous marine and fresh-water strata — Abundance of Cerithia in 
the Calcaire grossier — Upper marine formation indicates a subsidence — 
Part of the Calcaire grossier destroyed when the upper marine strata origi- 
nated — All the Parisian groups belong to one great epoch — Microscopic 
shells — Bones of quadrupeds in gypsum — In what manner entombed — Num- 
ber of species — All extinct— Strata with and without organic remains alter- 
nating — Our knowledge of the physical geography, fauna, and flora of the 
Eocene period considerable — Concluding remarks , » . 241 
CHAPTER XIX. 
Volcanic rocks of the Eocene period — Auvergne- — Igneous formations 
associated with lacustrine strata — Hill of Gergovia — Eruptions in Central 
