NAT. GEOG. MAG 



■ riG. 



VOL. V 1693 PL. 13 



PROPORTION OF FOREIGN BORN TO TOTAL POPULATION 



15-25 PER CENT 



MORE THAN 25 ;; 



FIG. 2 

 PROPORTION WHICH NATIVE WHITES OF NATIVE PARENTAGE BEAR TO ALL WHITES 



MORE THAN 95 PER CENT 

 80-95 n 



50-80 PER CENT 

 30-50 V 



LESS THAN 30 PER CENT 



DISTRIBUTION BY NATIVITY 





