208 THE ANTIQUITY OF MAN 



exist and the extreme uncertainty in which the 

 whole question is involved. 



FIRST GLACIAL PERIOD. Scanian (G.) ; Gunz (P.) 



Commences at the beginning of the Pleisto- 

 cene period, and was an epoch of intense cold, 

 all records of which in Britain have been destroyed 

 or buried under later glacial formations. 



First Inter-Glacial Period. Norfolkian (G.) ; 

 Giinz-Mindel (P.). 



Britain was joined to the Continent, and the 

 Thames was a tributary of the Rhine. The hip- 

 popotamus, elephants (E. meridionalis and E. 

 antiquus), bear, bison, sabre-toothed tiger were 

 amongst the fauna. Geikie (p. 250) thinks that 

 the sand-beds of Mauer, in which the Heidelberg 

 mandible was discovered may belong to this 

 period. " The geological and palaeontological 

 evidence, although not quite decisive, seems to 

 favour the reference of this ancient human type 

 to the First Interglacial or Norfolkian stage." 



Hoernes associates both Chellean and Mous- 

 terian races with this interval, which, it may be 

 added, corresponds to the Cave-Bear Period of 

 E. Lartet.* 



SECOND GLACIAL PERIOD. Saxonian (G.) ; Mindel 



(p.). 



Though not so severe, the diminution in tem- 

 perature was considerable, as much as 20, " a 



* In order to prevent this account from becoming 1 inordinately 

 long- and involved, I omit the opinions of other authorities as to 

 the place of the different races in connection with the Glacial 

 periods. Suffice it to say that there is great difference of opinion, 

 and some account thereof will be found in Sollas, pp. 398, seq. 



