CHAPTER XXVII 



THE SKIN AND BATHING 



455. The derma. The skin 

 which covers the entire body. 



The skin (X 100). 



a dead layer of epidermis. 



b growing layer of epidermis. 



c layer of cells containing the coloring 



matter of the skin. 



d papilla. 



e sweat gland. 



f small blood tube. 



g fibers of the derma. 



A fat cells in the derma. 



256 



is the tough, loose sack 

 It is designed to protect 

 the body and to give 

 off perspiration and 

 heat. (See pp. 235, 248.) 

 The main part of the 

 skin is a tough, elastic 

 network of fibers, called 

 the derma or cutis, which 

 forms a layer from -^ to 

 \ of an inch in thickness. 

 The derma of animals, 

 when tanned, forms 

 leather. The skin is 

 connected with the body 

 by a loose network of 

 fibers called the siibcu- 

 taneous tissue, which per- 

 mits the skin to move 

 freely over the deeper 

 parts. Over some parts 

 of the body, as upon the 

 abdomen, the subcutane- 

 ous tissue contains a 

 thick layer of fat. 



