ANTIQUITY OP MAN. 



233 



Post-pliocene drift. 



Passage of German flora into 

 England. Mammoth and 

 Megaceros and Cave Bear 

 etc., living in Europe. 

 Advent of man ? * 



Table of Physical Changes in Western Europe in the 



Later Tertiary and Modern Periods. 



(See Lyell, "Antiquity of Man," p. 323). 



POST-PLIOCENE. 



1st. Continental Period. Land ) r, ,-. , , , 



, ni . , [ Cromer Forest bed. 



elevated. Climate mild . J 



2nd. Period of Glaciation and^ 



Submergence. Land de- Boulder deposits and marine 



pressed 1,000 feet or more. 



Climate cold and much 



floating ice . . . . 

 3rd. Second Continental Period.. ") 



Land again elevated until 



much higher than at pre- 

 sent, and British Islands 



united to mainland. Climate 



continental and surface 



densely wooded . .... 



MODERN. 



"Age of Amiens gravels and 

 raised beaches, and close 

 of Palaeocosmic and be- 

 ginning of Neocosmic 

 age. Men subjected to 

 great diminution of 

 numbers by floods and 

 subsidences. Several 

 species of mammals be- 

 come extinct. Stone age 

 of antiquaries. 



5th. Modern or historic age. ) Bronze and Iron ages of anti- 

 Land slowly subsiding . . J quaries. 



* Pengelly, in a recent paper on the Flint Implements from 

 Kent's Cavern, holds that man may have existed in Devon- 

 shire in or shortly after the first continental period. This 

 conclusion, however, requires us to believe that the oldest de- 

 posit of Kent's Cavern is of this age, and that the flints 

 found in it are really of human workmanship. Neither of these 

 data can as yet be considered as established. 



4th. Period of depression and 

 oscillation, ending in re- 

 elevation, and present geo- -< 

 graphical condition of 

 Europe - . 



