530 



THE HUMAN BODY 



the Body, while their place is taken by new cells, formed in the 

 deeper layers, and pushed up to the surface and flattened in their 

 progress. The change in the form of the cells as they travel out- 

 wards is accompanied by chemical changes, and they finally con- 



FIG. 142. A section through the epidermis, somewhat diagrammatic, highly 

 magnified. Below is seen a papilla of the dermis, with its artery, /, and veins, g g; 

 a, the horny layer of the epidermis; b, the rete mucosum or Malpighian layer; d, the 

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

 duct of a sweat-gland. 



stitute a semitransparent dry horny stratum, a, distinct from the 

 deeper, more opaque and softer Malpighian or mucous layer, b and 

 d, of the epidermis. 



The rolls of material which are peeled off the skin in the " sham- 

 pooing" of the Turkish bath, or by rubbing with a rough towel 



