-w) 



THE 



LIFE OF THE PLEISTOCENE 

 OR GLACIAL PERIOD 



AS RECORDED IN THE DEPOSITS LAID DOWN 

 BY THE GREAT ICE SHEETS 



BY 



FRANK COLLINS BAKER 



Curator of the Museum of Natural History 

 University of Illinois 



Published by the University of Illinois 

 Under the Auspices of the Graduate School 



1920 



