store). You will see how all the things which we are supposed to eat
tomorrow and next week and next year have been put away in jars and cans
and other artificial containers which Nature did not provide for us but
which man was forced to invent and perfect before he could be assured of
his regular meals all the year around.

Even a gas-tank is nothing but a large pitcher, made of iron because
iron does not break as easily as china and is less porous than clay. So
are barrels and bottles and pots and pans. They all serve the same
purpose--of providing us in the future with those things of which we
happen to have an abundance at the present moment.

And because he could preserve eatable things for the day of need, man
began to raise vegetables and grain and saved the surplus for future
consumption.

This explains why, during the late Stone Age, we find the first
wheat-fields and the first gardens, grouped around the settlements of
the early pile-dwellers.

It also tells us why man gave up his habit of wandering and settled down
in one fixed spot where he raised his children until the day of his
death when he was decently buried among his own people.

[Illustration: PREHISTORIC MAN IS DISCOVERED.]

It is safe to say that these earliest ancestors of ours would have given
up the ways of savages of their own accord if they had been left to
their fate.