WATER 185 



dirt from soiled clothing. Making other substances 

 become a part of itself in this way is called dissolving, 

 or taking into solution. Notice how much salt, sugar, 

 or other substance a glass of water can take into 

 solution. This is an interesting experiment that all 

 can try. It is because of this dissolving power that 

 water is so useful in cleaning floors, furniture, and any- 

 thing else that is soiled. On account of the same 

 quality it is able to carry away waste and filth from 

 our homes through the sewer pipes. 



A great deal of water must be used in bathing, if 

 we are to keep our skin clean and wholesome. It is 

 also just as necessary to make free use of this dissolv- 

 ing liquid to keep the inside of our bodies in a clean, 

 healthy condition. In studying about How Jack's 

 House Builds Itself, we found that it must get rid of 

 certain harmful acids, poorly digested materials, and 

 other waste products. Water is an important aid 

 in getting these out of the body. As it is able to soak 

 up dirt from clothes and carry waste through sewer 

 pipes, so it can take up acids and other injurious or use- 

 less substances, and carry them from the body through 

 the kidneys, lungs, and skin. It may also be of great 

 assistance to the intestines in getting rid of the solid 

 waste products of digestion. 



Any boy knows that a bicycle runs its best when all 

 the parts are thoroughly clean. Like the bicycle, 

 our bodies can perform their best service when kept 

 thoroughly clean in all their parts. Drinking freely 



