186 
FINDING NATURE'S TREASURES 
“Some are ground up when they come tumbling down 
the creek. Tiny pieces break off of rocks that stick out 
of the ground very much the same way that little pieces 
of wood come off old logs. It takes a long, long time, but 
after a while the rocks turn to flour, and so we find clay. 
But, when men want white clay, they don’t wait so long. 
They take the feldspar rocks and grind them in mills 
until they are very, very fine. Then they make dishes of 
this flour. That is how they get most of the clay from 
which our pretty dishes are made.” 
“I didn’t know that there were so many interesting 
things about clay,” said Fred. 
