176 FENCES.

served rail fences, and board fences of vari-
ous kinds, and were looking out very sharply
for every peculiarity in the mode of fixing
them. There were agood many stone walls,
and presently Rollo said that his father had
not told them about walls.

“No,” said he, “I was coming to that
next. Walls are the best kind of fences,
though they cost the most.”

“© father,” said Rollo, “I should not
think such old stones would cost any thing
at all.”

‘‘'™he stones themselves do not cost any
thing —it is the time and labor in hauling
them, and laying them in the wall. When
the stones are all ready on the land, it 1s an
excellent plan to make stone wall. It will
last a great many years.”’

‘‘T should think it would last forever,”
said Rollo’s mother.

“The frost heaves it a little every year,
until at length it gets out of shape at the
top, and finally tumbles down. You some-
times see an old stone wall, by the side of
the road, running in and out like a zigzag rail
fence. It is the work of the frost heaving
away upon the foundation, every year for