306 THE INVISIBLE WORLD 



Anyway, the open well is unsafe. How liable 

 to pollution. Toadstools may grow on its curb- 

 ing, fall and poison the water. Small animals 

 mouse, mole, snake, skunk, rabbit, may fall in 

 and decay! 



If you must use the open well, cover it tightly, 

 clean often. But remember the drive well is a 

 hundredfold safer. If deep enough, all pollution is 

 avoided. 



In developing the spring, dig deep to the bed 

 rock if practicable. Lay the pipe, with copper 

 strainer attached to end. Curb with small stone 

 and Portland cement in such way as to exclude all 

 surface water. Build the curbing two feet above 

 surface ground. Bank it around. Put on roof with 

 locked door. You thus get only the pure Spring 

 water. 



