They are the ends of the magnet, and are denominated north and south, according as they point to the north or south poles of the earth.
What are the poles of the earth?
The extremities of the earth’s axis, or the points on the surface of the globe through which the axis passes.
What is a magnetic needle?
Simply a bar of steel which is a magnet, suspended in such a way that it can freely turn to the north or south.
DIAGRAM SHOWING THE VARIATION OF THE MAGNETIC AND GEOGRAPHICAL POLES
What is a mariner’s compass?
It is a delicate steel bar or needle balanced upon a pivot placed beneath its center of gravity in such a way that it can turn horizontally without obstruction. This needle is usually inclosed in a box, upon the bottom of which is a card, with the various points—north, south, east, west, etc., etc., marked upon it.