PREFACE. Vll 



Henry Woodward for his ever-ready helpfulness, and 

 for the use of the Plate for illustration of the group 

 of the four friends Joseph Prestwich, Professor John 

 Morris, Mr F. E. Edwards, and Mr Searles Wood. 

 The kindness of Mrs Lyell (author of the ' Life and 

 Letters of Sir Charles Lyell ') has made it possible to 

 introduce several letters to Sir Charles. I have also 

 to thank Mr Roderick F. Murchison for the loan of 

 several letters to Sir Roderick I. Murchison ; and Mrs 

 Mason Hoppin of New Haven, Connecticut, U.S.A., 

 for so kindly obtaining information about the Great 

 Seal of the United States. To none am I more in- 

 debted than to my three sisters, Isabella, Margaret, 

 and Louisa E. Milne, who have given constant and 

 loving aid in the preparation of the MS. for the 

 printer. 



G. A. P. 



DARENT-HULME, No.y 1899. 



