A DECADE OF PROGRESS IN EUGENICS 



PLATE 24 



POPULATION TURN -OVER IN HAWAII, 182 3 - l<530 



The Working Out of Immigration and Differential Fecundity. 



Ifioo 1800 1900 



1920 I9SO 



OUTCOME OF DIFFERENTIAL FECUNDITY, 



by Group Percentage of Total Populati'onT" 



Basic Formula: 



Per cent- in ne*r futur* g«nc 

 for ttw particular group - 



felte 



p-H^xillJt T..MH__ 



migration, and 



<*1W fooiily")>,r. mm: 

 & two p*r*or.s of th« 

 »4nt garwretion wifi tarvc 

 ir ctiUetrer. at tta b*jm- 

 g of rh« M*r g«fl«rotten. 



.J'- rilMl 



Differential Fecundity 



(a) Population Turn-over in Hawaii 1823-1930. Exhibited by Dr. Louis R. Sullivan 

 (deceased), American Museum of Natural History, New York City, and Dr. Harry H. 

 Laughlin, Eugenics Record Office, Cold Spring Harbor, New York. 



(b) Outcome of Differential Fecundity. Exhibited by Dr. Harry H. Laughlin, Eugen- 

 ics Record Office, Cold Spring Harbor, New York. 



