Note 164 — FEBRUARY.
Reading edition
I am assured by Professor Butcher that there is no such passage in the Odyssey, but he suggests "that what Scott had in his mind was merely the Greek idea of a waking vision being a true one. They spoke of it as a ὕπαρ opposed to an ὄναρ, a mere dream. These waking visions are usually said to be seen towards morning.