How does Mark Twain use imagery in The Man That Corrupted Hadleyburg?

Imagery:

It is a mean town, a hard, stingy town, and hasn’t a virtue in the world but this honesty it is so celebrated for and so conceited about; and so help me, I do believe that if ever the day comes that its honesty falls under great temptation, its grand reputation will go to ruin like a house of cards.”

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And straightaway—with a shudder—came this, from the man’s wife:

“Oh, don’t! What horrible thing are you mulling in your mind? Put it away from you, for God’s sake!”