PEEFACE. 



The first work that should be recorded in this the first volume 

 of the Geological Record is that of its Sub-Editors and Con- 

 tributors, who have done their self-imposed task so zealously 

 as to greatly lighten my own editorial duties, although at the 

 same time increasing the size of the book to about a third 

 more than the original estimate. 



A word of thanks is also due to those gentlemen who came 

 forward as Guarantors, in order to insure the expense of the 

 work. It is most satisfactory, however, that their office proves 

 to be purely honorary, the number of Subscribers being large 

 enough to cover the cost of publication. 



The British Association having now voted a grant towards 

 the expenses of the Geological Record, we shall be relieved 

 from financial anxiety in future. 



It was, of course, impossible to compile such a book without 

 some sort of classification ; and the plan adopted is as simple as 

 could be devised. Under each heading works are arranged 

 alphabetically after the authors' names, except Maps, which 

 are in the alphabetical order of places. There are altogether 

 more than 2000 entries. 



Some difficulty was felt in many cases in deciding whether 



a2 



