CHAPTER XC 

 DRINK CLEAN WATER 



THREE-FOURTHS of the earth, is covered by water. 

 Three-fourths of every vegetable on the earth is 

 water. Three-fourths of every animal, including 

 man, is water. 



To support this general seventy-five per cent, of 

 water requires a vast annual rainfall. Nature is 

 ready with her supply. A body of water equal to 

 a sea three thousand miles wide, sixteen feet deep, 

 and twenty-four thousand miles long, falls on the 

 earth every year. 



One portion of this water feeds all the rivers 

 and other streams, which finally find their way to 

 the sea, helping keep up the sea level. The other 

 portion, after feeding the vegetable and animal 

 kingdoms, sinl^s down deeply into the earth to feed 

 all the springs and underground currents. 



The first portion, when used by man, is called 

 Surface water; the second, Spring water. Which 

 the clean water? 



Manifestly Surface water is exceedingly liable 

 to contamination. The chances are manifold. 

 Every heavy rain washes into streams, lakes and 

 ponds, from adjacent lands, all sorts of impurities. 

 Into all this Surface water careless persons dump 



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