PREFACE. IX 
but I can assure the reader that I have seldom cited them 
in reference to British Fossils, without a previous exaimina- 
tion of the original specimens. 
Another source of information, quite indispensable in 
the composition of a work like the present, is due to the 
labours of the Field-Geologist and Collector of Fossil 
Remains; and to the Curators of Public Museums, who 
impart so much valuable information by the oral eluci- 
dation and the systematic display of the treasures confided 
to their care. 
To some of our most eminent Geologists I am under 
deep personal obligation for the warm interest they have 
manifested in the success of my researches. 
Dr. Buckland has not only given me the free use of the 
Mammalian Fossils with which he has so richly stored the 
Geological Museum at Oxford, but he has also, with his 
wonted liberality, supplied me with drawings and un- 
published proof impressions of the Fossil Bones and Teeth 
from British caves which have been discovered or explored 
by him since the publication of the ‘Reliquie Dilu- 
viane.’ 
I gratefully acknowledge the same liberality on the part 
of the eloquent Lecturer on Geology in the University of 
Cambridge in affording me the use of the specimens in 
the Woodwardian Museum, which owes so vast an aug- 
mentation of its means of instruction to Professor Sedge- 
wick’s liberal management and superintendence. 
To Charles Konig, K.H., and to his able assistant Mr. 
Waterhouse, I am indebted for the kind facilities afforded 
me in the examination of the Mammalian and Avian re- 
mains in the Mineralogical Department of the British Mu- 
seum, which has been enriched by some of the rare or 
unique originals from the cave of Kent’s Hole, figured in 
