Or constellations, and each received a name suggested by mythological or other figures.
Constellations of the Northern Hemisphere >>
Moreover, we have good reasons for inferring that different constellations of external causes may determine whether the internal physiological disturbances induced by a given agent shall lead to pathological and dangerous variations, or to changes which may be harmless or even advantageous to the plant concerned.
(Vitruvius names Cicero and Lucretius as post nostram memoriam nascentes.) The subjects of the eight chapters are - (1) the signs of the zodiac and the seven planets; (2) the phases of the moon; (3) the passage of the sun through the zodiac; (4) and (5) various constellations; (6) the relation of astrological influences to nature; (7) the mathematical divisions of the gnomon; (8) various kinds of sundials and their inventors.
Associated with the Sky are tablets to the sun and moon, the seven stars of the Great Bear, the five planets, the twenty-eight constellations, and all the stars of heaven; tablets to clouds, rain, wind and thunder being placed next to that of the moon.