é
110 = =LUCY AMONG THE MOUNTAINS.

down below here, and that stops the water, and
makes a pond.”

“‘ That’s an excellent plan,” said Lucy. “I
think it looks a great deal prettier.”

°Q, but they didn’t do it to make it look pret-
tier,” said Comfort.

‘What did they do it for?” asked Lucy.

“Why, to make the mills go. They almost
always have a pond to make mills go.”

J don’t see how a pond can make mills go,”
said Lucy.

“Why, the dam makes the water rise very
high,” said Comfort; “and then they build a
mill on the bank just below the dam, and have
a great wheel down in the bottom of the mill,
and they let the water out of the pond against the
wheel, and that carries it round so as to make the
mill go.”

“Do they have a hole in the dam right oppo-
site to the wheel ?” asked Lucy.

“Yes, they have an opening,” replied Comfort,
“and a kind of a long box, to lead the water
from the opening in the dam to the wheel. That
is what they call the flume. Til show you the
flume when we get to the mill.”

“ Are we going to the mill?” asked Lucy.