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DISTRIBUTION AND 



ORIGIN OF LIFE IN 



AMERICA 



BY 



ROBERT FRANCIS SCHARFF 



Ph.D., B.Sc. 



Author of "European Animals, their Geological History and Geographical Distribution. 



Corresponding Member of the Academy of Natural Sciences, Philadelphia; 



of the Senckenberg Natural History Society, Frankfurt ajMain 



of the Linnean Society of Bordeaux ; and of the 



Anthropological Society of Paris 



LONDON 



CONSTABLE & COMPANY LTD 



10 ORANGE STREET LEICESTER SQUARE WC 

 1911 



