A long time ago, there lived a poor man whose real name has been forgotten. He was little and old and his face was wrinkled, and that was why his friends called him Mr. Vinegar. His wife was also little and old, and they lived in a little old cottage at the back of a little old field.

"John," said Mrs. Vinegar, "you must go to town and buy a cow. I will milk her and churn（搅拌）butter and we shall never want for anything."

"That is a good plan," said Mr. Vinegar, so he started off to town while his wife waited by the roadside.

Mr. Vinegar walked up and down the street of the town looking for a cow. After a time, a farmer came that way, leading one that was very pretty and fat.

"Oh, if I only had that cow," said Mr. Vinegar, "I would be the happiest man in the world!"

"She's a very good cow," said the farmer.

"Well," said Mr. Vinegar, "I'll give you these 50 gold pieces for her."

The farmer smiled and held out his hand for the money, "You may have her," he said, "I always like to oblige（施恩惠）, my friends!"

Mr. Vinegar took hold of the cow's halter and led her up and down the street. "I am the luckiest man in the world," he said, "for only see how all the people are looking at me and my cow!"

But at one end of the street, he met a man playing bagpipes（风笛）. He stopped and listened -- Tweedle Dee Tweedle Dee.

"Oh, that is the sweetest music I ever heard," he said, "and just see how all the children crowd around the man and give him pennies! If I only had those bagpipes, I would be the happiest man in the world!!"

"I'll sell them to you," said the piper.

"Will you? Well then, since I have no money, I will give you this cow for them."

"You may have them," answered the piper, "I always like to