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THE POPULAR SCIENCE MONTHLY. 



glacial which has been applied to it is certainly appropriate, because 

 of the enormous and unknown extension of the glaciers, the traces of 

 which are the principal character of the epoch. But at certain dis- 

 tances from existing glaciers there doubtless existed valleys with a 



warm or at least a temperate climate. The mixed fauna and flora 

 of this period abundantly prove this. The remains of huge animals 

 gathered in the ancient alluvium of the Seine and Somme, as deter- 

 mined by MM. Larted and Gaudry, demonstrate that many species 



