THE DIVISION OF HEAVEN.
Thales, Pythagoras, and the followers of Pythagoras do distribute the
universal globe of heaven into five circles, which they denominate
zones; one of which is called the arctic circle, which is always
conspicuous to us, another is the summer tropic, another is the
solstice, another is the winter tropic, another is the antarctic circle,
which is always out of sight. The circle called the zodiac is placed
under the three that are in the midst, and is oblique, gently touching
them all. Likewise, they are all divided in right angles by the
meridian, which goes from pole to pole. It is supposed that Pythagoras
made the first discovery of the obliquity of the zodiac, but one
Oenopides of Chios challenges to himself the invention of it.