xii CONTENTS. 



PAGE 



at several places. The beds accumulated in broad waters. The descrip- 

 tions continued below Reading, Brentford, Ilford, Grays-Thurrock. Land 

 and fresh-water shells. Mammalia of the pleistocene zone below London 

 and about Oxford. Flint implements found near Wittenham, Newbury, 

 and other localities. Aborigines of Britain . . . . . . . . . . 456 



CHAPTER XIX. WASTE OF THE LAND. 



Change of level of the sea considered. Great depression and re-elevation, and 

 again great depression of the Tamisian area. Waste of the earth's surface 

 by sea-action on the rising and falling land. Rains and rivers. Origin 

 of valleys. Antiquity of gravel deposits. Changes of climate . . . . 48 1 



CHAPTER XX. ECONOMICAL APPLICATIONS. 



Coal. Question of its existence and accessibility within the drainage of the 

 Thames. Iron ore of Evenlode and Cherwell Valleys and Shotover Hill. 

 Brick, tiles, pottery. Ochre of Shotover. Fuller' s-earth. Glass-sand. 

 Potter's-clay. Water. The condition of the Thames. Of Oxford wells. 

 Hinksey water. Railway Lake water. Artesian wells recommended. 

 Distant supply to replace the deficiencies of Thames . . . . .. 493 



APPENDIX. 



List of Genera of Oolitic Fossils .. ..505 



Additional Notices .. .. .. .. .. .. .. .. ..511 



