CHAPTER XL 



THE COVERING. BOARDS AND SHINGLES. 



The Skin. Coloring' of the Skin. Change 

 of Color. Oil Glands. Pores of the 

 Skin. Cleanliness. Hair and Nails. 



No part of the human structure is more fa- 

 vorable for carrying out the similitude of a 

 house, than the skin. If we were to regard 

 the body, to the extent I have now described 

 it, as the mere frame of the building though 

 in reality the bones and ligaments alone consti- 

 tute the frame work the skin would compare 

 almost exactly with the clapboards and shin- 

 gles. For there is first a thin series of lining 

 boards, then a layer of thicker boards, and 

 then the shingles or clapboards. 



A coat of paint is also applied in both cases ; 

 but the place of application is somewhat differ- 



