eal more feebly.

"So, you see that this needle is really a little magnet, just like
Jonas's great one."

"Only there is no proof that it has the two different kinds of magnetism
in the two ends," said Rollo's mother.

"We can easily show that," said his father. He asked Dorothy to get
another saucer full of water, while he prepared another float. Then he
put the magnetized needle upon the new float, leaving the unmagnetized
one upon the old float. They both looked almost precisely alike, each
upon its own little disc of cork in its saucer of water.

"There," said he, "you cannot see any difference between them; but there
is a great deal of difference between them; for one is only a common
needle of steel, but the other has its two extremities magnetic in
opposite ways."

To prove this, Rollo's father brought one end of the bar to the _point_
of the magnetized needle, and the point was repelled. He brought it then
to the _eye_ of the same needle, and it attracted it. Then he brought
the same end of the bar, first to the point, and then to the eye of the
unmagnetic needle, and it attracted them both; so it was evident that
there was a considerable difference, in reality, between the condition
of the two, though there was no difference in external appearance.

"Now you see, from all this," added Rollo's father, "that when a magnet
touches a piece of steel, like a needle, it immediately makes it a
magnet itself; that is, it makes the two ends magnetic, one having one
kind of magnetism, and the other the other kind; and then, if you take
two magnets, and bring those two poles which have the same magnetism
together, they repel one another; and if you bring those together which
have different magnetisms, they attract each other."

"How do you know that they are the same magnetisms that repel, and
different that attract?" said Rollo's mother.

"I will show you," said his father.

Then he took the needles that he had used off from their floats, and
laid them away. He took next two new needles, exactly of a size, and he
held them together between his thumb and finger, with the eyes
projecting together. Then he rubbed them once or twice upon the end of
Jonas's magnet, saying,

"There, you see I use both of these needles alike. Of course the eyes
have both the same magnetisms. Now you will find that when I put one of
them upon the float, and then bring the eyes together, they will repel
each other; but an eye and a poi