TO 



THE PRESIDENT AND FELLOWS OF MAGDALEN COLLEGE, 



FIEM SUPPORTERS OP PHYSICAL SCIENCE IN OXFORD, 



THIS WORK IS DEDICATED 



BY ONE WHO IS NOT UNMINDFUL THAT TO THEIR 



FRIENDLY RECOGNITION OF A LIFE'S DEVOTION TO GEOLOGY 



HE OWES THE PRIVILEGE OF A PLACE 



AMONG 

 THE HONOKARY FELLOWS OF THE COLLEGE. 



