"So I opened it --you cannot imagine how stealthily, stealthily --until, at length a simple dim ray, like the thread of the spider, shot from out the crevice and fell full upon the vulture eye."
Metaphor
"First of all I dismembered the corpse. I cut off the head and the arms and the legs."
Inference
"Whenever it fell upon me, my blood ran cold; and so by degrees --very gradually --I made up my mind to take the life of the old man, and thus rid myself of the eye forever."
Onomatopoeia.
CREAK
"He had the eye of a vulture --a pale blue eye, with a film over it."
"TRUE! --nervous --very, very dreadfully nervous I had been and am; but why will you say that I am mad?"
