CONTENTS. 
XIX 
and Reading Beds formerly called “Plastic Clay.”—Fluviatile Beds under¬ 
lying Deep-sea Strata.—Thanet Sands.—Upper Eocene Strata of France. 
—Gypseous Series of Montmartre and Extinct Quadrupeds.—Fossil Foot¬ 
prints in Paris Gypsum.—Imperfection of the Record.—Calcaire Silicieux. 
—Gres de Beauchamp.—Calcaire Grossier.—Miliolite Limestone.—Sois- 
sonnais Sands.—Lower Eocene of France.—Nummulitic Formations of 
Europe, Africa, and Asia.—Eocene Strata in the United States.—Gigantic 
Cetacean.Page 250 
CHAPTER XYII. 
UPPER CRETACEOUS GROUP. 
Lapse of Time between Cretaceous and Eocene Periods.—TaWe of succes¬ 
sive Cretaceous Formations.—Maestricht Beds.—Pisolitic Limestone of 
France.—Chalk of Faxoe.—Geographical Extent and Origin of the White 
Chalk.—Chalky Matter now forming in the Bed of the Atlantic.—Marked 
Difference between the Cretaceous and existing Fauna.—Chalk-flints.— 
Pot-stones of Horstead.—Vitreous Sponges in the Chalk.—Isolated Blocks 
of Foreign Rocks in the White Chalk supposed to be ice-borne.—Distinct¬ 
ness of Mineral Character in contemporaneous Rocks of the Cretaceous 
Epoch.—Fossils of the White Chalk.—Lower White Chalk Avithout Flints. 
—Chalk Marl and its Fossils.—Chloride Series or Upper Greensand.— 
Coprolite Bed near Cambridge.—Fossils of the Chloride Series.—Gault.— 
Connection between Upper and Lower Cretaceous Strata.—Blackdown 
Beds.—Flora of the Upper Cretaceous Period.—Hippurite Limestone.— 
Cretaceous Rocks in the United States. 281 
CHAPTER XVIII. 
LOWER CRETACEOUS OR NEOCOMIAN FORMATION. 
Classification of marine and fresh-water Strata.—Upper Neocomian.—Folke¬ 
stone and Hythe Beds.—Atherheld Clay.—Similarity of Conditions causing 
Reappearance of Species after short Intervals.—Upper Speeton Clay.— 
Middle Neocomian.—Tealby Series.—Middle Speeton Clay.—Lower Neo¬ 
comian.—Lower Speeton Clay.—Wealden Formation.—Fresh-water Char¬ 
acter of the Wealden.—Weald Clay.—Hastings Sands.—PunfieldBeds of 
Purbeck, Dorsetshire.—Fossil Shells and Fish of the Wealden.—Area of 
the Wealden.—Flora of the Wealden. 308 
CHAPTER XIX. 
JURASSIG GROUP.-PURBECK BEDS AND OOLITE. 
The Purbeck Beds a Member of the Jurassic Group.—Subdivisions of that 
Group.—Physical Geography of the Oolite in England and France.—Up¬ 
per Oolite.—Purbeck Beds.—New Genera of fossil Mammalia in the 
Middle Purbeck of Dorsetshire.—Dirt-bed or ancient Soil.—Fossils of 
the Purbeck Beds.—Portland Stone and Fossils.—Kimmeridge Clay.— 
Lithographic Stone of Solenhofen.—Archaeopteryx.—Middle Oolite.—Cor¬ 
al Rag.—Nerinaea Limestone.—Oxford Clay, Ammonites and Belemnites. 
—Kelloway Rock.—Lower, or Bath, Oolite.—Great Plants of the Oolite. 
—Oolite and Bradford Clay.—Stonesfield Slate.—Fossil Mammalia.— 
Fuller’s Earth.—Inferior Oolite and Fossils.—Northamptonshire Slates.— 
Yorkshire Oolitic Coal-field.—Brora Coal.—Palaeontological Relations of 
the several Subdivisions of the Oolitic group... 321 
