ts, which sank lower and lower into the earth
hundreds and thousands of years ago. They became mixed with other
things, and in time were changed to coal. We can see the grain in some
of the coal, as we see it in wood.

_Write and learn:_

Coal is--
A Mineral.
Black.
Opaque.
Brittle.

Coal is--
Buried forests.
Got from mines.
Heavy.
Grained.

Coal is used for--
Fuel.
Smelting metals.
Making gas.
Making tar.

FIRE. [_Page 119._

1. Fire is useful but dangerous. A spark from it might set a house on
fire. We ought to be very careful about it. Children should never play
with fire.

2. It is so useful that we should not be able to have many things we
have, if we had no fire.

3. When England was covered with forests, hundreds of years ago, people
used to have fires of wood, instead of coal. Wood-fires are not so smoky
as those made of coal, but they are not so hot.

_Write and learn:_

Fire is--
Useful.
Dangerous.
A good servant.
A bad master.

Fire--
Burns.
Smokes.
Makes flame.
Gives heat.

Fire--
Warms our houses.
Cooks our food.
Makes water into steam.
Makes soot.

THE END.

Edinburgh:
Printed by W. & R. Chambers, Limited.

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