204 



ARBOREAL MAN 



life (see Fig. 78). This later human growth of the leg 

 may be expressed more crudely, but perhaps more 

 strikingly, in another way. When a baby is born, its 

 umbilicus is below the middle point of its entire body 

 length, measured from the soles of its feet to the crown 



Pig. 76. — Xewborn Fig. 77. — Child Eighteen Fig. 78. — Child Six 

 Baby. Months Old. Years Old. 



of its head. But as the post-natal growth proceeds, the 

 umbilicus moves relatively upwards, and by the end of 

 the eighteenth month it is the central point of the body 

 length. By the fifteenth year it is well above this point, 

 which is now situated in the region of the pubic symphysis. 

 It is worth}^ of note that in this feature the male has 

 advanced more than the female, since the preponderant 

 growth of the legs has exerted a more marked influence 

 in displacing the body centre in the adult man than in 

 the adult woman. 



