416* 



TRANSACTIONS OF THE 



Mr LyeWs Geology. 



THE PRINCIPLES OF GEOLOGY: BEING AN INQUIRY HOW 

 FAR THE FORMER CHANGES OF THE EARTH'S SURFACE 

 ARE REFERABLE TO CAUSES NOW IN OPERATION. By 



Charles Lyell, Esquire, Fellow of the Royal Society, and Foreign Secre- 

 tary to the Geological Society of London. 



It is with much pleasure that we announce to the 

 general as well as scientific reader, that Messrs. Kay & 

 Brother, Publishers, for the Geological Society of Penn- 

 sylvania, of this volume of their Transactions, have in 

 press the volumes, the title of which stands at the head 

 this notice. 



It can scarcely be necessary to say any thing in praise 

 of this work. Its appearance will always form an epoch 

 in the history of geology. Up to that time the doctrine 

 which assumed the causes of changes, whether of a destroy- 

 ing or productive character, actually in progress on the 

 surface of the globe, to be utterly inadequate to explain, 

 scarcely even to illustrate, the earlier changes of which 

 that surface exhibits such striking traces, held almost 

 undisputed sway in the geological circles. Mr Lyell, 

 applying himself to the elucidation of the existing causes 

 of change, and their probable influence on the older 

 geological formations, with an industry and research 

 which are joined to the happiest powers of description 

 and command of language, has produced a work not only 

 of the highest interest to the scientific world, but of the 

 most popular and fascinating nature to the general reader. 



Messrs Kay & Brother, with an honourable zeal for 

 the advancement of Geological science, propose to issue 

 the reprint of this important and interesting work as 

 speedily as possible. The distinction with which it has 

 been received in England and on the continent of Europe, 



