'^8 Where did Life Begin? 



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age of man, and were then exterminated by- 

 cold. Can it be true that the ancestors of 

 these hairy elephants migrated to the Arctics ? 

 If so, they came from a warmer climate, for 

 all other climates are and always have been 

 warmer, and they must have come from a 

 hairless ancestry, for all other elephants are 

 hairless, and so they must have come naked. 

 They must also have come from lands where 

 their food was better and more abundant than 

 in the Arctics, for it could not have been 

 poorer or scantier anywhere after lands south 

 of the Arctics were habitable for elephants. 

 Do animals having no enemies, or at any rate 

 no unconquerable superiors, migrate from lands 

 of plenty, where the climate is such that they 

 need no covering, to districts where food is 

 scarce and clothing a necessity ? It is more 

 reasonable, and it accords better with the law 

 of life, to suppose that the elephants of the 

 North remained in the ancient home of all 

 elephants, and came to have hair and wool in 

 their long struggle with a lowering tempera- 

 ture, while those that moved southward with 

 the southward-moving isothermal lines have 



