C0 AP. VIII. 
SEXUAL SELECTION. 
301 
the mean proportion of male to female births, during 
the whole period of the above ten years, was as 102'8 
to 100; whilst in N. Wales (where the average annual 
hirths ’are 12,873) it was as high as 106-2 to 100. 
'halving a still smaller district, viz., Rutlandshire (where 
the annual births average only 739), in 1864 the male 
hirths were as 114-6, and in 1862 as 97'Q to 100; but 
oven in this small district the average of the 7385 
hirths during the whole ten years was as 104-5 to 100; 
that is in the same ratio as throughout England. 32 
The proportions are sometimes slightly disturbed by 
Unknown causes; thus Prof. Faye states “that m 
“ some districts of Norway there has been during a 
“decennial period a steady deficiency of boys, whilst 
“in others the opposite condition has existed.” In 
Trance during forty-four years the male to the female 
hhths have been as 106-2 to 100; but during this 
Period it has occurred five times in one department, 
“Hif times in another, that the female biiths have 
e *ceeded the males. In Russia the average proportion 
is as hi'di as 108-9 to 100. 33 It is a singular fact that 
"’ith Jews the proportion of male births is decidedly 
Wger than with Christians : thus in Prussia the propor- 
tion is as 113, in Breslau as 114, aud in Li vonia as 120 
to 100 • the Christian births in these countries being 
hhe same as usual, for instance, in Livonia as 104 to 
hJO.'s It is a still more singular fact that m different 
Nations, under different conditions and climates, in 
Naples, Prussia, Westphalia, France and England, the 
T 32 ‘Twenty-ninth Annual Report of the Registrar-General for 186C. 
ln this report, (p. xii) a special decennial table w given. 
. * Tor Norway and Russia, see abstract of Rrof. Faye s researches, 
I? ‘British aud Foreign Medico- CUimrg. Review. April, 1807, p. 3-13, 
^ For France, the ‘ Annuaire porn- l’Au 1807, p. -13. 
34 In regard to the Jews, see M. Tliury, La Loi de Pr 
‘ La Loi de Production des 
