318 
SEXUAL SELECTION: MAN. 
Papa 
II. 
cannot be detected in the infantile skull . 4 In regard to 
colour, the new-born negro child is reddish nut-brown, 
which soon becomes slaty-grey ; the black colour being 
fully developed within a year in the Sudan, but not 
until three years in Egypt. The eyes of the negro are 
at first blue, and the hair chesnut-brown rather than 
black, being curled only at the ends. The children of 
the Australians immediately after birth are yellowish- 
brown, and become dark at a later age. Those of the 
Gnaranys of Paraguay are whitish-yellow, but they 
acquire in the course of a few weeks the yellowish- 
brown tint of their parents. Similar observations have 
been made in other parts of America . 5 
I have specified the foregoing familiar differences be- 
tween the male and female sex in mankind, because they 
are curiously the same as in the Quadrumana. With 
these animals tho female is mature at an earlier age than 
the male; at least this is certainly the case with the 
Gelus azarw. 6 With most of the species the males are 
larger and much stronger than the females, of which 
tact the gorilla offers a well-known instance. Even i u 
so trifling a character as the greater prominence oi the 
superciliary ridge, the males of certain monkeys diff el 
irom the females , 7 and agree in this respect with man- 
kind. In the gorilla and certain other monkeys, the 
- 1 Scliaaffh arisen, ‘ Antliropolog. Beview,’ ibid. p. 429. 
* p mner-ILy, on negro infants, as quoted by Vogt, ‘ Lectures o» 
Mali, Lug. translat, ISG4, p. 189 : for further facts on negro infant aS 
quoted from V\ interbottom and Oauiper, see Lawrence, ‘Lectures 0I * 
Physiology. &c. LS22, p. 451. Bor the infants of the Guaranys, tP ‘ 
Kenggcr, ■ Siiugethiore,’ Ac. a. 3. See also Godron, ‘ Be TEspeoe,’ torn- 
ii. 1859, p. 253. For the Australians, Waltz, ‘ Inlroduct. to Ant‘ u ° 
pology,’ Eng. translat. 18G3, p. 99. 
* Bengger, 1 Shugetliiere,’ Are. 1830, a. 49. , 
7 As in Maoacus cynomolgw (Desmarest, • Mammalogie,’ P- 63 1 n ” 
in Hyl abates agilis (Geoffrey St.-Hilaire and F. Cuvier, ‘Hist. Nat. c tD 
Mamm.’ 1824. tom. i. p. 2), 
