EXERCISE No. 54 

 WATER ENTERING A TILE DRAIN 



Object: To determine how and where water enters the 

 tile drain. 



Material: A quart tin can, a quantity of fine sand or 

 of sandy loam soil. 



Method: Punch three nail holes in the can, one about 

 three-fourths of an inch from the bottom, the second about 

 the same distance above the first but a little to the right of 

 it; the third hole about three-fourths of an inch above the 

 second and a little to the right of it. Fill the can with soil 

 to within half an inch of the top. Pour water on the soil and 

 notice from which hole the water comes first. 



Conclusion: From which hole did the water begin to 

 flow first? If the lowest hole then represents the bottom of 

 the tile, the second one the middle of the tile, and the third 

 the top of the tile, where does the water naturally enter the 

 tile? Can you tell why the water enters the joints at the 

 bottom?... 



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