IV. Similes and Metaphors
Simile 1: "You're as dumb as one of your own keys when you have to do with my principle, you know you are. Let us out you old fox, or I'll get him to bring an action against you for false imprisonment."

Simile 2:
"It struck me that Wemmick walked among the prisoners much as a gardener might walk among his plants."
      Dickens' use of similes and metaphors helps you picture certain situations and characters. It helps to better explain how a character might feel or what a character looks like. In the first simile, Wemmick is telling the turnkey how dumb he is by using the metaphor "dumb as one of your own keys." He also calls him and old fox. This sort of adds humor to the situation as many similes and metaphors do. The second simile describes Wemmick as being like a gardener. This simile helps us to picture Wemmick as observant, much like a gardener looking over his plants.
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