During the trial scene in Act III the characters discuss a cursed pig. We are reminded that when Hale first came to town, Corey questioned his wife's habits of reading "strange books" but that was more an opportunity to get to know the new reverend and not as much a claim against his wife. In this scene his wife has been charged for predicting when pigs she sold to Walcott would die. Reverend Hale asks Corey what is the charge against his wife, and he responds
That bloody mongrel Walcott charge her. Y’see, he buy a pig of my wife four or five year ago, and the pig died soon after. So he come dancin’ in for his money back. So my Martha she says to him, “Walcott, if you haven’t the wit to feed a pig properly, you’ll not live to own many,” she says. Now she goes to court and claims that from that day to this he cannot keep a pig alive for more than four weeks because my Martha bewitch them with her books!
The court scene shows the audience that the courts are not interested in the truth or even convicting the guilty. Corey is offering an explanation behind the girls' behavior while Proctor and Nurse are providing solid proof against the girls' "testimonies" however, they are ignored and Corey is physically thrown out of the courtroom.