CONTENTS. 



Preface ....... 



The Eocene Beds ..... 



The Oligocene Beds ..... 



An Outline Guide to the Principal Sections and Fossili 

 FEROus Localities .... 



Pal/Eontology of the Eocene and Oligocene Beds of the 

 Paris Basin ..... 



Introduction to the Tables of Mollusca 



Table of the Eocene Mollusca . 



Table of the Oligocene Mollusca 



Notes on the Lists of Mollusca (with New Names 

 proposed) ..... 



Appendix I ..... • 



Appendix II ..... . 



Index to Genera and Sub-Genera of Mollusca 

 General Index ..... 



I'AGE 



vii. 

 I 



34 



44 



57 

 63 

 04 



102 



no 



114 



115 

 ii6 



125 



LIST OF ILLUSTRATIONS. 



^Geological Map of the Paris Basin . . To face page i 



Fig. I. Section from Compiegne to Cjise-la-Motte „ 3 



Fig. 2. Diagram indicating the Disposition of the 



Tertiary Beds under Paris. . . ,,3 



Fig. 3. General Section at Issy (Paris) ; Calcaire 



Grossier, Lignites .... ;. ^ 



Section AT Cuise-la-Motte ; Sables DE CuisE „ 11 



Section of the "Banc Vert" ... „ 19 



Section at Arcueil ; Calcaire Grossier . ,,21 



Section at the Ecole d'Agriculture, 



Grignon ; Calcaire Grossier . . i, 22 



Fig. 8. General Section at Auvers ; Lower Sables 



MoYENs, Horizon of Auveks . . ,,25 



Fig. 9. Section near Ver, Road to Ermenonville ; 

 Middle Sables Moyens, Horizon of 

 Beauchamp ..... -1 27 



Fig. 10. Section at La Chapelle-en-Serval ; Upper 

 Sables Moyens (Horizon of Morte- . 



FONTAINE) and MiDDLE SaBLES MoYENS . ., 28 



Fig. II. General Section at Butte d'Orgemont 

 (Carriere Bast) ; Gypsum Beds and 

 Marls . . . . . . .,32 



Fig. 12. Section of the Quarry of Vintue, Etrechy ; 

 Falun of Jeurre, Molasse of Etrechy, 

 Meulieres of Brie .... ,,36 



Fig. 13. Section from Vaugirard to Meudon . „ 47 



