Il6 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 harder the sweat 

 glands have to work to get rid of the 

 perspiration. 



8. The thicker it is, the harder some other 

 part of the body will have to work to help 

 out the sweat glands with what they ought 

 to do. 



In some cases this state of affairs may make a man 

 or a child ill. 



