‹‹‹ Vitr. 9.1.7 | Table of Contents | Vitr. 9.1.9 ›››
8Mercury revolves in the heavens in such a manner, that passing through the several signs in three hundred and sixty days, he returns to that sign from which he set out, remaining about thirty days in each sign.
8Mercury, on his journey through the heavens, passes through the spaces of the signs in three hundred and sixty days, and so arrives at the sign from which he set out on his course at the beginning of his revolution. His average rate of movement is such that he has about thirty days in each sign.