TO 



CHARLES LYELL, Esq., F.R.S., 



THIS SECOND EDITION IS DEDICATED WITH GRATEFUL PLEASURE, 

 AS AN ACKNOWLEDGMENT THAT THE CHIEF PART OF WHAT- 

 EVER SCIENTIFIC MERIT THIS JOURNAL AND THE OTHER 

 WORKS OF THE AUTHOR MAY POSSESS, HAS BEEN DERIVED 

 FROM STUDYING THE WELL-KNOWN AND ADMIRARLE 



PRINCIPLES OF GEOLOGY. 



