Why at the Pole itself the Coition is stronger than in
the other parts intermediate between the æquator and the pole;
and on the proportion of forces of the coition in
various parts of the earth and of the terrella.
[CHAP. XV].
*
The Magnetick Virtue which is conceived in Iron is
more apparent in an iron rod than in a piece of iron that
is round, square, or of other figure.
