Why do the Putnams start talking about witchcraft? What do they give as an example?

In Act I, Mrs. Ann Putnam and her husband enter the Parris home. She claims that Betty's illness is certainly a stroke of hell. There are rumors that Betty was flying over the Ingersoll's barn, according to Mrs. Putnam. Their daughter Ruth is also sick, and they assume witchcraft to be the cause. Mrs. Putnam admits that she sent Ruth to Tituba. She believes that Tituba knows how to speak to the dead, and she wished to learn who murdered her seven children during their infancy.