TABLE OF CONTENTS. vii 
PAGE 
CHAPTER XIII. 
The Lower Chalk in Berkshire. 
General Description - - - - - 165 
Stratigrapliical Details - - - - - 166 
Zone of Ammonites varians. - - - - 166 
Chloritic Marl - - - - - - 166 
Chalk- ------- 167 
Zone of Holaster subglobosus - - - - - 170 
Lists of Fossils from Chloritic Marl and Lower Chalk - - 172 
CHAPTER XIV. 
The Lower Chalk in Oxfordshire and Buckinghamshire. 
General Description - - - - - -173 
Stratigrapliical Details - - - - - - 174 
Zone of Ammonites varians - - - - - 174 
Zone of Holaster subglobosus - - - - - 177 
(a) Totternhoe Stone- - - - - - 177 
(b) Higher Beds - - - - - - 178 
List of Fossils - - - - - - - 182 
CHAPTER XV. 
The Lower Chalk in Bedfordshire and Hertfordshire. 
General Description - - - - - - 184 
Stratigrapliical Details - - - - - - 184 
Zone of Ammonites varians - - - - - 184 
Chloritic Marl and Coprolite Bed - - - - 184 
Chalk Marl - - - - - - - 187 
Zone of Holaster subglobosus - - - - - 187 
Totternhoe Stone - - - - - - 187 
Chalk above the Totternhoe Stone - - - - 188 
Belemnite Beds - - - - - - 190 
List of Fossils ------- 191 
CHAPTER XVI. 
The Lower Chalk in Cambridge and Suffolk. 
General Description - - - - - - 193 
Stratigrapliical Details - - - - - - 193 
Cambridge Greensand - - - - - - 193 
Chalk Marl - - - - - - - 196 
Totternhoe Stone - - - - - - 198 
Chalk above the Tottenhoe Stone - - - - 199 
List of Fossils ------- 202 
CHAPTER XVII. 
The Lower Chalk in Norfolk. 
General Description ------ 2 06 
Stratigrapliical Details 207 
Zone of Ammonites varians - 207 
Zone of Holaster subglobosus - - - - - 211 
(a) Totternhoe Stone - - - - - 211 
(b) Higher Beds - - - - - - 211 
List of Fossils - - - - - - - 213 
CHAPTER XVIII. 
The Lower Chalk in Lincolnshire. 
General Description - - - - - - 216 
Stratigrapliical Details - - - - : - 218 
Zone of Ammonites varians - - - - - 218 
Zone of Offaster sphcericus ----- 220 
The Belemnite Marl - - - - - - 222 
List of Fossils 2 24 
