A sly old cat had been told that the birds in the bird-house were ill. "I will put on some spectacles and an overcoat and visit them," said the cat to himself. "Perhaps they will believe I am the doctor. Then if they open their door to me, I will eat them up." So he crept up to the birdhouse. "I hear you are ill," said he, "so I have come to bring you some medicine." "Thank you," said the birds; "but we know who you are. We are much more likely to get well without your medicine than with it."