334 
CONCLUSION OF PART I. 
have great difficulty in following our reasoning upon the origin of certain great 
surface-accumulations which are yet undescribed. 
In the part of the work which we now conclude, we have, indeed, purposely 
avoided any interference with our main object, of presenting to the reader a clear 
description oi the materials which have been progressively accumulated under the 
waters. 
This first division of the geological history of so large an empire is simply, 
therefore, to be viewed as an effort to describe the long submarine succession 1 
which is exhibited in the solid frame-work of European Russia, — a succession 
which we have now traced from the earliest animal epoch, to a period in which the 
shelly remains of the sea approach very closely to those of our own aera. 
1 See Tabular View attached to the Map. 
END OF PART 1. 
