Ii6 GOOD HEALTH 



are crowded close together over the whole body; they 

 work fastest when we are warm, and the perspiration 

 that they pour on the skin needs to be washed off 

 regularly. 



Now notice several facts about this perspiration. 



1. It is a mixture of water and waste matter 

 from the body. 



2. The water evaporates soon. 



3. While it is evaporating, it cools the skin. 



4. After it has evaporated, the waste matter 

 that was in it stays on the skin. 



5. This waste mixes with oil from the oil 

 glands, bits of epidermis, dust from our 

 clothes and from the air, and stays like a 

 snug, thin coat on the outside of our body 

 from head to heel. 



6. Unless it is washed off or rubbed off, 

 this coat grows thicker every day. 



7. The thicker it is, the less perspiration 

 will get through it to cool the skin and to 

 regulate the temperature of the body. 



8. When the temperature of the body can- 

 not be regulated by the sweat glands, health 

 itself is apt to suffer. 



9. When perspiration is checked, some 

 other part of the body must dispose of what 

 should have gone off through the sweat 

 glands. 



