TO 
CHARLES LYELL, Eso., F.B.S., 
THIS SECOND EDITION IS DEDICATED WITH GRATEFUL PLEASURE, A8 
AN ACKNOWLEDGMENT THAT THE CHIEF PART OF WHATEVER 
SCIENTIFIC MERIT THIS JOURNAL AND THE OTHER WORKS OF THE 
AUTHOR MAY POSSESS, HAS BEEN DERIVED FROM STUDYING THE 
WELL-KNOWN AND ADMIRABLE 
PRINCIPLES OF GEOLOGY. 
