Note 141 — THE WORKS AND DAYS.
George Chapman translation
Beware the fifth.] Virgil copies this, as well as some other of these superstitions, Georg. i. 275:
For various works behold the moon declare Some days more fortunate: the fifth beware: Pale Orcus and the Furies then sprang forth— ... Next to the tenth the seventh to luck inclines For taming oxen and for planting vines: Then best her woof the prudent housewife weaves: Better for flight the ninth; averse to thieves. Warton.