Note Seers they saw visions — THE AGAMEMNON
Gilbert Murray translation
[P. 18, ll. 409 ff., Seers they saw visions.]—A difficult and uncertain passage. I think the seers attached to the royal household (cf. Libation-Bearers, l. 37, where they are summoned to read a dream) were rather like what we call clairvoyants. Being consulted, they look into some pool of liquid or the like; there they see gradually emerging the palace, the injured King, the deserted room, and at last a wraith of Helen herself, haunting the place.