VI PREFACE. 



taken by Mr Adam Sedgwick and Mr "Walter Heape. 

 They have attempted to carry out as far as possible 

 what we believe to have been Balfour's views, and 

 trust that the public will judge leniently of their 

 efforts to perform a difficult task. I have myself been 

 able to do no more than offer general advice from time 

 to time; and though it has not been thought advisable 

 to change the title, the merits as well as the responsi- 

 bilities of the latter part of the work must rest with 

 them. 



M. FOSTER. 



Trinity Colleoe, 



Cambkidoe, * 



March, 1883. 



