THE THREE LAST EPC OF TERRESTRIAL ECCENTRICITY, 



During which there were, in the northern hemisphere, man] jilities of cold climate and of genial climate, each lasting about 10,000 years. 



Each of the smallest divisioi 10,000 years. The whole = 3,000,000 years. 



the Eocene Era. ") alternately cold and genial 



the Meioceno Kra. '} alternately cold and genial 



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MiliKil.iiil.iiiliiiiliiiilininiiil HiiiihiiiliiiiliiMiiiii 11 



EOCENE ERA. 



MKIOCENE ERA. 



These period, occurred ( THIRD ° R GLA CIAL EPOCH 

 in the Pleistocene Era. 1 comprism- I.. |.,i-il.il,i ,,-s ,,r alternately 



Period of greatest cold. 



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PLEIOCENE era. 



PLEISTOCENE ERA. 



1. Wesolitliic Man homing the U»-ns, incised, by himself, on Antler.— Dl'ROTHY Cave, 



Horses incised on Antler, by Mesolithie Man.— La Ma 



