166 AN EXPERIMENT.

outside, towards the paper; next, blue, and
farther in, deep purple.”

Rollo and-Lucy looked, and said they saw
it too; and they wanted to know what made
all the colors so near together.

Mrs. Holiday said she did not know.

“There is some black, too,” said Rollo,
pointing to the end of the needle which had
been in the flame.

“J think that is only smoke,’ said Mrs.
Holiday; and she wiped the needle with
a piece of paper, and all the smoke came off,
but the colored band remained firm.

They then tried the experiment again with
a large darning-needle, and they found that it
succeeded still better; for the several colors
were more distinct from each other, and
each occupied a broader space.

After they had examined the needles as
long as they wished, Rollo gave them back
to his mother, and she brightened them up
again, by rubbing them in her little emery-
bag. The emery in the bag was the same
kind with that used on emery-wheels, and
it polished the needles again at once, and
made them look as bright as before.

$e agian