10 THE STRUCTURE OF MAN 
less hairy than that of the Burmese, the whole of whose trunk 
and limbs was covered with hair from 4-8 inches long. 
The extreme hairiness of the Ainos (Fig. 6, B) may probably 
also be referred to Pseudohypertrichosis; but this point requires 
closer investigation. 
In all the cases mentioned above, the persistence of the 
vestigial lanugo must undoubtedly be regarded as a return to a 
Fig. 8.—Youne ORANG-UTAN. Zeitschrift fiir Ethnologie (Anthropolog. 
Gesellschaft), Bd. viii. 
primitive hairy condition in Man; whereas true hairiness, or 
“hypertrichosis vera,” is quite a different thing. This, which 
was well exemplified in the once famous dancer Julia Pastrana L., 
is due to an excessive development of the secondary covering of 
hair. In her case (Fig. 6, A) the greater part of the primary 
hairy covering (the lanugo) must be considered to have been shed 
during embryonic development. 
Bonnet rightly points out that “in Man and the domestic 
animals, the accessory structures of the epidermis accurately 
register the balance of nutrition,’ and that various circumstances, 
