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.321 
Other data have been published by Mantegazza (14); they referred to 
material rather heterogeneous but abundant enough (3,255 observations), 
referring to persons who for any reason could be considered illustrious. 
We have, therefore, nine sets of data altogether. In seven of these the 
largest number of births occurred in winter, and in seven, too, the smallest 
number of births occurred in summer; where the maximum does not fall 
in winter, it falls in spring or autumn, never in summer; and where the 
minimum does not fall in summer, it falls in autumn or spring, never in 
winter. We may therefore conclude that the births of eminent people 
occur with the greatest frequency in winter, and least frequency in summer. 
If we put together the nine sets of data, a process entailing some 
repetition, we find that the births in winter are to those in summer as 
1150 to 884. 
The difference certainly depends mainly on the relative frequency of 
births in the different seasons. In Europe, to which most of our data 
refer, a maximum occurs in winter and a minimum in summer. But they 
seem higher than for births in general. 
This, perhaps, depends upon the limited number of observations. Let 
us note, however, that the advantage of winter and the disadvantage of 
summer is uncertain for the Senatorial class, marked for the writers of the 
present day, and exceedingly marked in the case of highly illustrious persons. 
Does not this lead us to suspect that there is a relation between such a 
gradation and the gradations of rank of the three groups? Illustrious men 
are certainly those who emerge mainly owing to their intellectual powers; 
after them come the present-day writers, not all of whom will become 
famous j last in order I should put the Italian Senators, for though com­ 
pared to the rest of humanity they always represent the results of selection, 
they are none the less very often chosen, as everyone knows, more for their 
administrative or political merits, or for financial reasons, than for high 
intellectual powers.TABLE XXIII. 
Influence of the Season of Birth on Physical Development at 11 years of age. 
{Middles!) or o' : Those born between 1898 and 1905). 
Month of BirthNumber of observationsMean stature 
in inchesMean weight 
in pounds 
January-March835i-661-45 April-June .............................8250-6260-84 
July-September9249’9557-89 October-December................7950-3357-88¥
        

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