Full text: papers communicated to the first International Eugenics Congress held at the University of London, July 24th to 30th, 1912

D. C. Gini.Sociology and Eugenics.325 
the preceding birth : the percentage works out to 58% in Chemnitz, and to 
67% in well-to-do English families. Much lower, on the contrary, is the 
percentage among French employes (20%), probably because of the demo­ 
graphic conditions peculiar to the French nation. (See Table XXV.) 
TABLE XXVI. 
Injnnt Mortality according to the Interval between a Birth and the Preceding 
Birth. Well-to-do English Families(i). 
OrderInterval between birth and preceding birth 
of 
birthI year and less1-2 yearsmore than 2 years 
Number of deaths in first year of life per 100Dorn. 
21676 31586 
41596 
5-61697 7-912-5109 
10 and more201310 
Total of others 
thanI5'38-97'2 
first born Number of deaths in first 5 years of life per 100 born 
22012II 31912II 
420HIO 
5-62114II 7-91815H 
10 and more23I815 
Total of others 
thanjç-ç13-6il-8 
first born 
Number of deaths between 2nd and 5th year of life per 100 survivors at one year. 
Total of others 
than5"35'iS’° 
first bom 
(*) The Data for this table were taken from Westergaard, Page 371, who 
took them from Statistics of families (1874) Ch. 
The deleterious consequences which too short a period after the preceding 
birth have upon the vitality of the child are indisputable, at least during the 
first year of life. This is shown by the data of Table XXVI., and I 
should not be surprised if a sufficiently large number of observations were 
found to confirm the results of Ewart (based upon too small a number of 
observations to be accurate), according to which the height, weight, and
        

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