Summary
A bright first-grader once gave me a long, rolled-up scroll he'd made in school about water. He explained that there's a certain amount of water in the world and that the Earth, rocks, sun, wind, etc., purify it so we can keep using that same water over and over. I still recall that science lesson.
Farmers are often hard-pressed to get the water they need for crops, animals, dairy equipment and home needs. Our forefathers learned to collect water in big, wide holes in the ground called cisterns. They were lined with stones or bricks and sometimes with a smooth coating of cement for purity.See the full content of this document
Extract
Bath Time Didn't Require Rubber Duckies
Pure water? It came from the housetops by way of wooden gutters - - and that doesn't sound like purity. When Dad bought more cows, built ...
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