A DECADE OF PROGRESS IN EUGENICS 



PLATE 22 



Inventiveness by Racial Stock 

 in the United States 1927. 



■■ I Study of the Old World R a « descent of the 737J „.,„„, ,„,, ^ „ k 

 responded to. inquiry) out of alt nor™t,>„< „f 1 *, i , pcraons (a " °f wto ™ 

 by the Un.ted orates in , 927 ' ° f ** flrit 1 °' 000 P atCTti tol ^ 



C» ce ofll , "'.r" *° ind " °f *«*««». *M«l.b equal to 

 fie percent of patentees of the particular race d.vided by the percent of 



Wta*. W00d m ' hC Amer,C0 " Mi °" «««"«g to tte "Knat f 



" 0»«7 „ B 



Race Descent of the Population 

 of the United States, 



used as a basis for computing the Index of Invent- 

 iveness, giving the percent distribution of the several 

 Old World Race-Stocks in the Population. 



Race Descent 



(a) Inventiveness by Racial Stock in the United States. Exhibited by Dr. Harry H. 

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



(b) Race Descent of Population in the United States. Exhibited by Capt. John B. 

 Trevor, New York, New York. 



