XV111 PREFACE. 



manner that they will be readily accessible, 

 not only to the naturalist, but also to the 

 general reader. 



Since the publication of the former edi- 

 tion of this Essay, many curious discoveries 

 have been made in regard to fossil organic 

 remains : some of these are included in the 

 Illustrations at the end of the Essay, others 

 want of room forces us to omit. 



R. JAMESON, 



COLLEGE OF EDINBURGH, 

 April 1817. 



