THE EPIDERMIS. 



413 



The rolls of material which, are peeled off the skin in the 

 *' shampooing" of the Turkish bath, or by rubbing with a 

 rough towel after an ordinary warm bath, are the dead 

 outer scales of the horny stratum of the epidermis. 



magnified. 



gg\ a, the 



layer ; d, the layer of columnar epidermic cells in immediate contact with the 



dermis ; /i, the duct of a sweat-gland. 



In dark races the color of the skin depends mainly on 

 minute pigment granules lying in the deeper cells of the 

 Malpighian layer. 



