Some of the superstitions found in "The Adventures of Huckleberry Finn" include a spider crawling up Huck's shoulder, Jim bewitched by witches and Huck spilling salt at breakfast. Author Mark Twain addresses both formal religion, or Christianity, and superstition as the two belief systems in the book.
In addition to superstition, Christianity is the other belief system addressed in "The Adventures of Huckleberry Finn." In Huck's life, however, only the educated and civilized people believed in Christianity. He thought Heaven would be full of boring people and Hell would be more exciting. Since Huck's prayers never seemed to be answered, he put more faith in superstition.
One example of Huck's superstition is when a spider crawled up his shoulder. When he brushed it off, the spider landed in a candle and died. To ward off bad luck, Huck turned around three times, crossed his heart and tied up a lock of his hair. Superstition hit Huck's friend Jim, also. Jim believed that witches put him in a trance and rode him all over the world. He claimed to have a talisman given to him by the devil that he could use to call witches and cure people of their ailments. There is a traditional superstition that spilled salt brings bad luck unless a person throws a bit of salt over his or her left shoulder. When Huck spilled salt one morning, he was unable to throw the salt and was convinced bad luck would follow him the rest of the day.