10 THE STRUCTURE OF MAX 



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. YOONQ ORANG-UTAN. Zeitschrift fur thnologie (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 I., 

 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, 



