w Beign of Angio sperms, 



" In the Miocene flora only have been pointed out many 

 Apocyneae, and Rubiacese, which I have mentioned above. 



" 1. Eocene Epoch. — This epoch, in the most precise limits, 

 comprehends plastic clay with its lignites, the coarse Parisian 

 limestone and gypsum which lie above it in the same basin ; 

 but I have not thought it worth while, in the meantime, to 

 separate from it some formations which, according to the in- 

 vestigations of modern geologists, are placed between the 

 Cretaceous formations and the inferior parts of the formations 

 mentioned ; such are the Nummulitic formations of the Vicen- 

 tin, comprehending the celebrated locality of Monte-Bolca, and 

 probably some others near it, such as Salcedo, in the Vicentin. 

 I have likewise joined to this Flora of the Eocene formations 

 a very remarkable locality of the basin of Paris, the relations 

 of which with the Tertiary beds are not yet perfectly deter- 

 mined, — these are the beds of a species of ancient Travertin 

 which, near Sezanne, contain numerous fossil vegetables still 

 undescribed, and of which 1 shall here notice the most re ■ 

 markable. These plants have very peculiar remains, and 

 belong probably to a special Flora, unless the differences can 

 be ascribed to a diversity of station. 



"Besides the different members of the Eocene formation, 

 properly so called, of the Paris basin, I comprehend in this 

 Flora the fossils of the same formation in England, at the 

 Isle of Wight, and Isle of Sheppey in the London basin. 

 These latter fossils, consisting almost solely of fruits trans- 

 formed into pyrites, constitute a whole which has no ana- 

 logue in any other of the Tertiary basins of Europe; not only 

 in the number and diversity of these fruits, but in their pecu- 

 liar characters, which remove them widely from the plants 

 whose leaves occur in the other beds of the same geological 

 epoch. Everything, therefore, would lead us to suppose that 

 these fruits, although belonging to plants cotemporaneous 

 with the Eocene deposits of Europe, have been brought from 

 distant countries by marine currents, just as fruits are still 

 brought from the equatorial regions of America to the coasts 

 of Ireland or Norway by the great current of the Atlantic. 

 The deposit in the Isle of Sheppey appears therefore to be an 



