eY v 
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 
NEW YORK 
THE MACMILLAN COMPANY 
1912 
