CONTENTS. vii 
Page. 
APPENDIX 
On the excavation of valleys by diluvial denudation . . 235 
Valleys of denudation, and diluvial pebbles, in Dorset, Devon, Wilts, 
and Berks . ^39 
Valleys of denudation, and beds of diluvial gravel, in Warwickshire, 
Oxon, and Middlesex .... ~49 
EXPLANATION OF THE PLATES . . . .259 
INDEX ....... 281 
The Description of the Cave at Kirkdale and the eleven first Plates are reprinted 
from the Philosophical Transactions, by permission of the President and 
Council of the Royal Society. 
