nt will attract. So two points will
repel."

"But you have not magnetized the points," said Rollo's mother.

"Yes," said his father. "When we magnetize one end, the other end
becomes magnetized, itself, in the contrary way."

So he put one of the needles upon the float, and then brought the eye of
the other down very near to its eye. It was repelled, as he had said it
would be. He then brought the two points together, and they were
repelled. But if he brought an eye towards a point, or a point towards
an eye, they were attracted.

"This is the end of my lecture," said he, "for to-night."

"O, father," said Rollo, "a little more."

"No more to-night, only to recapitulate," said he.

"Recapitulate? what is that?"

"Why, tell you, briefly, the substance of what I have explained, so that
you may remember it."

"Well, father," said Rollo.

"In the first place, a magnet has a peculiar and mysterious attractive
power for iron, residing in its two extremities, which are called _its
poles;_ and the power which resides in one extremity is, in some way or
other, opposite in its nature to that of the other extremity. Each of
these poles repels a pole like itself, and attracts one different from
itself, in any other magnet."

Poor Nathan could not understand this grave, philosophical disquisition
very well, and he began to get pretty sleepy. He had, however, been
somewhat amused, during the greater part of the time, in seeing the
corks float about upon the water, with the needles upon them. So his
father took the needles off, and let him have the two floats in one of
the saucers to play with, a few minutes, while Dorothy put the other
things away. He asked her to put all the things away together, so that
they could get them ready the next evening, and then he said that
perhaps he would give them another lecture.

INTELLECTUAL PHILOSOPHY

Rollo's father gave one or two other lectures upon magnetism, in the
course of which Rollo found out a good deal about the subject; and,
having learned from his father's explanations that any magnet, when
balanced freely, would point to the north and south, that is, one end to
the north and the other to the south, he determined to try the
experiment. He accordingly poised a needle carefully upon a cork, as his
father had done in his lecture, and put it in a basin of water upon the
platform. But he did not succeed very well. The needle would always
swing round, and turn its p