LETTER VIL
THE EARTH'S NORTH POLE.

As I have told you something about
the magnetic needle, I don’t know but
I ought to say a word or two about the
north pole of the earth. I have said
that one end of the needle, after it is
magnetized, points toward the north
pole. Now you might suppose that
the earth had axles, something after
the fashion of the axles to a cart, and