All which the Aethiopians observed in the skye, and afterwards they transmitted their doctrine incompleat to the Aegyptians. And the Aegyptians, deriving from them the auspiciall art but half consummated, advanced it; and they indicated the measure of each planet’s motion, and determined the numericall extension of yeares and moneths and hours. The moneths they measured by the moon and her cycle, the year by the sun and his revolution.

And they devised other inventions much greater than these. For they divided the entire skye and the other stars that are inerrant and fixed, and do never move, into twelve segments for such as move: which they styled “houses,” although they resemble living creatures, each patterned after the figure of a different kind, whereof some are sea-monsters, some humans, some wild beasts, some volatiles, some juments.