A bad foot.

 In some countries now,a man who Is ill can ask for a doctor's help and pay hotning. But in the old days everyone had to pay a doctor for hos work.
 There was a bookseller who did not like paying for anything. One day he let a big box of books fall on his foot.
  "Go to the doctor," said his wife, "and show that foot to him."
    "No," he said. "I'll wait until the doctor comes into the shop next time. Then I'll ask him about my foot. If I go to see him,I shall have to pay him."
   On the next day the doctor came into the shop and bought some books. When the bookseller was getting them ready,he told the doctor about his bad foot. The doctor looked at it.
      "Yes," said the doctor. "You must put that foot in hot water every night. Then you must put something on it."
        He took out a piece of paper and wrote on it.
       "Buy this and put it on the foot before you go to bed every night," he said.
       "Thank you," said the bokseller. "And now,sir,here are your books."
        "How much?" said the doctor.
        "Two pounds."
        "Good," said the doctor. "I shall not have to pay you anything."
        "Why?" asked the bookseller.
        "I told you about your foot. I want two pounds for that. If people come to my house,I ask them to pay one pound for a small thing like that. But when I go to their houses,I want two pounds. And I came here,didn't I? Good morning."