ubbed, whether straight up or slanting in some way.
For in any case the verticity flows into the iron, {127} [Illustration]
provided it is touched by either end. Wherefore all the cusps at B acquire
the same verticity, after they are separated, but opposite to that pole of
the stone; wherefore also they are united to the loadstone at the pole B;
and all the crosses in the present figure have the opposite verticity to
the pole E, and are moved and laid hold of by E when they are in a
convenient position. It is exactly the same in the case of the long stone F
H divided at G; F and H always move, both in the whole and in the divided
stone, to opposite poles of the earth, and O and P mutually attract one
another, the one of them being the northern, the other the southern. For,
supposing H to have been the southern in the whole stone and F the
northern, P will be the northern with respect to H in the divided stone,
and O the southern with respect to F. So also F and H mutually incline to a
connection, if they are turned a very little toward one another, and run
together at length and join. But supposing the division of the stone to
have been meridional (that is, according to the line of a meridian, not of
any parallel circle), then they turn [Illustration] round, and A attracts
B, and the end B is attracted to A and attracts A, until, being turned
round, they are connected and cemented together; because magnetick
attraction is not made along the parallels, but meridionally. For this
reason pieces of iron placed on a terrella whose poles are A B, near the
aequator along parallels, * do not combine or stick together firmly: {128}
[Illustration] But if applied to one another along a meridian they are
immediately * joined firmly together, not only on and near the stone, but
even at some distance within the force of the controlling orbe. Thus they
are joined and cemented together at E, but not at C in the other figure.
For the opposite ends C and F meet and adhaere together in the case of the
iron just in the same way as A and B before in the case of the stone. But
they are opposite ends, because the pieces of iron proceed from the
opposite sides and poles of the terrella; and C in reference to the
northern pole A is southern, and F is boreal in reference to the * southern
pole B. In like manner also they are cemented together, if the rod C (being
not too long[204]) be moved further toward A, and F toward B, and they be
joined toget