"now he had a curious sense of relief, as though he had at last thrown down the gauntlet to the thing in the corner..."See in text(Paul's Case)
This metaphor is an example of foreshadowing, of Paul's finally lurking within that part of his mind that he dares not face. Like the dark corner, he wonders what really lies beneath in his own psyche. Now he realizes that there is no way back; he has to carry out his plan.
"suspicious colour of the pitcher..."See in text(Paul's Case)
Refer back to the previous annotation on the "red pitcher". Paul's red carnation set him aside and made others make opinions of him. Now, this pitcher causes a similar reaction in the layman population of Cordelia street.
Another reference to the motif of the color red. Its color elicited commentary from the Cordelia St. neighbors and, because of its uniqueness, was set out for the special serving of lemonade.