Chap. XIX. SEXUAL DIFFERENCES. 317 



brain is absolutely larger, but whether relatively to the 

 larger size of his body, in comparison witli that of 

 woman, has not, I believe been fully ascertained. In 

 woman the face is rounder ; the jaws and the base of the 

 skull smaller ; the outlines of her body rounder, in parts 

 more prominent; and her pelvis is broader than in man ;^ 

 but this latter character may perhaps be considered 

 rather as a primary than a secondary sexual character. 

 She comes to maturity at an earlier age than man. 



As witli animals of all classes, so with man, the dis- 

 tinctive characters of the male sex are not fully deve- 

 loped until he is nearly mature ; and if emasculated they 

 never appear. The beard, for instance, is a secondary 

 sexual character, and male children are beardless, 

 though at an early age they have abundant hair on 

 their heads. It is probably due to the rather late 

 appearance in life of the successive variations, by 

 which man acquired his masculine characters, that 

 they are transmitted to the male sex alone. Male 

 and female children resemble eacli other closely, like 

 the young of so many other animals in which the adult 

 sexes differ : thev likewise resemble the mature female 

 mnch more closely, than the mature male. The fe- 

 male, however, ultimately assumes certain distinctive 

 characters, and in the formation of her skull^ is said to be 

 intermediate between the child and the man.^ Again, 

 as the young of closely allied though distinct species do 

 not differ nearly so much from each other as do the 

 adults, so it is with the children of the different races of 

 man. Some have even maintained that race-differences 



2 Ecker, translation in ' Antliropological Review,' Oct. 1S68, p. 351- 

 35G. The comparison of the form of the skull in men and women has 

 been followed out with much care by Welcker. 



3 Ecker and "Welcker, ibid. p. 352, 855 ; Vogt, ' Lectures on Man,' 

 Eng. translat. p. 81. 



