62 THE STRUCTURE OF MAN 
usually occurs soon after birth; in most Apes, on the contrary, — 
much later. In Man the fusion first involves the facial portion 
Fic. 42.—SKULL OF A TURCO, in which the temporal bone nearly reaches the 
frontal. Between the two a narrow process of the parietal is intercalcated. 
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Fia. 43.—SKULL OF A TWO-YEAR-OLD CHIMPANZEE, in which the temporal bone 
is to a considerable extent in apposition with the frontal (77.). 
of the bone, its palatal part remaining for a long time, or even 
permanently, marked off from that of the maxillary by a suture 
or trace of a suture. The same is the case with the Anthropoids. 
