THE SKIN II 



broken so that the true skin is exposed, the epithelial cells 

 at the edge of the break usually produce new cells to cover 

 and heal the opening. But if they do not form new cells, 

 the true skin sprouts through the opening, forming proud 

 flesh, which must be scraped off or cauterized before the 

 epidermis can complete the healing. In the case of a 

 blister, the lowest cells of the epidermis are not removed ; 

 hence the epidermis is readily renewed. Sometimes super- 

 fluous hair grows on the upper lip of a lady, on moles, 

 or on unusual parts of the face. To remove this hair 

 so that it will not grow again, the papillae at the bot- 

 tom of the follicles must be destroyed. This is no easy 

 matter. Numerous " infallible " remedies are advertised, 

 but the only effective way is by means of the electric 

 needle, a needle which transmits an electric current. 



14. THOUGHT LESSON. Hygiene of the Skin. i. What 

 is lacking in the skin when it cracks or chaps ? How could 

 chapping be prevented in another way than by using 

 cream, etc. ? 



2. Why does the skin chap in cold weather more often 

 than in warm weather ? 



3. How does perspiration cool us? 1 



4. Why do we perspire more freely when we exercise ? 



5. Why do we perspire more freely when we are 

 warm ? 



6. Is it more necessary for mental workers to bathe 

 often, or to change their clothes often ? 



7. Which is more necessary for physical workers ? 



8. Do you know of persons who burn their hair with 

 hot irons ? What is the effect upon the hair of repeated 

 scorching ? 



1 Do not try to answer this unless you have studied elementary physics. A 

 knowledge of that subject will enable you to understand why wetting the feet 

 even with warm water causes colds more quickly than a draft of cool air upon 

 the feet. 



