8 INTRODUCTION. 



II. Lithological Geology, — a description of the rock-material 

 of the globe, its elements, rocks, and arrangement. 



III. Historical Geology, — an account of the rocks in the order 

 of their formation and the contemporaneous events in geological 

 history, including both stratigraphical and palseontological geology ; 

 and closing with a review of the system or laws of progress in the 

 globe and its kingdoms of life. 



IV. Dynamical Geology, — an account of the agencies or forces 

 that have produced geological changes, and of the laws and 

 methods of their action. 





