How does Edgar Allan Poe use imagery in The Murders in the Rue Morgue?

Imagery:

"As the strong man exults in his physical ability, delighting in such exercises as call his muscles into action, so glories the analyst in that moral activity which disentangles."

"There was an iciness, a sinking, a sickening of the heart - an unredeemed dreariness of thought which no goading of the imagination could torture into aught of the sublime. What was it - I paused to think - what was it that so unnerved me in the contemplation of the House of Usher?"