• 104 



REFERENCE MAP, ILLUSTRATING 



MISSISSIPPI VALLEY MIGRATION 



IBB'f. 



IBB4. 

 DRAWN AND ENGRAVED FDR THE 



ODLDEIST. 



IUHHWN HNU 

 ORNITHaLOBIBT 



Matlons lUi and 11^ in NmiUiein it_-xus are not g 



