PREFACE 
A sit is incumbent on every author to adapt his labours, 
as much as possible, to the wishes and expectations of his 
Readers, so it is also necessary to point out the reasons, 
which may have induced him to depart from those modes, 
which would have best accorded with their expectations. 
Under this consideration, the Author offers the follow- 
ing observations to the purchasers of this volume. 
Learning, with regret, that it has been imagined, by 
many, that the present volume would have concluded 
this work, he is under the necessity of observing that this 
opinion could not have been derived from any declaration 
of the Author, whose advertisements have never spe- 
cified more than that the first volume would contain the 
fossils belonging to the vegetable kingdom. Fully aware 
of the much greater number of interesting subjects which 
the animal kingdom would present for examination, he 
never could venture to conjecture to what extent they 
might enforce him to protract his labours. The opinion, 
b 
TO 
THE SECOND VOLUME. 
