LECTURE V. 



125 



ment and size of tlie cells, is tlie same as in the European, 

 the deepest columnar cells of the mucous layers are the 

 darkest, forming a contrast with the lighter dermis. Then 

 come cells which are lighter, though still brown, and which 

 especially accumulate between the papillee, but are also found 

 in the top and sides of them ; finally, in approaching the 

 scarf-skin they become yellow and pale. All these cells, ex- 

 cepting the membranous, are coloured throughout, and espe- 

 cially the parts around the granules, which, in the lower cellular 

 laminge, are by far the blackest parts of the cells. In the 

 negro, the scarf-skin has also a yellowish or brownish tint. I 

 find in the yellow skin of a Malay head, in the Anatomical 

 Collection of Wurzburg, the same as in the dark-coloured 

 scrotum of a European. Accordingly, the epidermis of the 

 coloured races is not essentially different from that of the 

 coloured spots in the whites, and even almost entirely agrees 

 with the skin in particular spots (aureola). 



Fig. 39. Section of the Skin from the femur of a NegrOj much magnified, 



after KoUiker. 



a. PapillsB of the corium. 6. Lowest black-coloured ceUs of the rete mu- 

 cosum. c. Lighter-coloured cells of the rete mucosum. d. Epidermis. 



Cutaneous perspiration, like colour, has a peculiar character, 

 which, in certain races, cannot be got rid of, even by the 



