Twice every year, in the early spring and in the late fall, Peter Rabbit watches the Smiling Pool with a great deal of eagerness. Can you guess why? It is because two very good friends of Peter's are in the habit of stopping there for a few days for rest and refreshment before continuing the long journey which they are obliged to make. They are Mr. and Mrs. Quack, the Mallard Ducks. Peter is very fond of them, and when the time for their arrival draws near, Peter watches for them with a great deal of anxiety. You see they have told him something of the terrible dangers which they always encounter on these long journeys, and so Peter is always afraid that something terrible may have happened to them, and it is a great relief when he finds them swimming about in the Smiling Pool.  
One reason Peter is so fond of Mr. and Mrs. Quack is because they always have a story for him. Sometimes it is a story of adventure, a tale of terrible danger and narrow escapes. Sometimes it is about their home in the far Northland, and again it is about the wonderful Southland where they spend the winter. But the story that Peter likes best is the one about where and how the Quack family got their funny, webbed feet. Mr. Quack doesn't think those feet funny at all, but Peter does. He never grows tired of watching Mr. and Mrs. Quack use them, because, you know, they are used so differently from other feet. And always he goes back to the dear Old Briar-patch with renewed admiration for the wisdom of Old Mother Nature.
 
Peter noticed those feet the first time he met Mr. and Mrs. Quack. He couldn't help but notice them. It happened that Mr. and Mrs. Quack were out on the bank of the Smiling Pool as Peter came hurrying over in his usual way, lipperty-lipperty-lip. They heard him coming and not knowing at first who it was they at once started for the water. Peter never will forget the funny way in which they waddled. He never had seen anybody quite so awkward. But when they reached the water he forgot to laugh. He simply stared open-mouthed in astonishment. You see there they were as graceful as they had been awkward on land. Afterward, when Peter had become acquainted with them and they were the best of friends, he ventured to speak of their queer feet.
 
"Do you know," said he, "you have the most interesting feet of anybody I know of. They are so broad that the first time I saw them I couldn't believe my own eyes. I didn't suppose anybody had such broad feet. I suppose there is some special reason why they are so broad and why your legs are so short. Do you know how Mother Nature happened to give you feet so different from the feet of other birds, Mr. Quack?"
 
Mr. Quack chuckled. "I tell you what it is, Peter," said he, "if you'll tell me why it is you have such long hind legs and such a funny short tail, I'll tell you why it is that Mrs. Quack and I have such broad feet, though I must confess that I don't see anything odd about them."
 
Peter agreed at once. He told Mr. and Mrs. Quack all about what happened to his grandfather a thousand times removed, the very first Rabbit, way back when the world was young, and how ever since then all Rabbits have had long hind legs and short tails. When he had finished Mr. Quack thoughtfully scratched his handsome green head, looked at his reflection in the Smiling Pool to make sure that he was looking his very best, looked behind to see that the feathers in the tip of his tail had the proper curl, and then gazed off over the Green Meadows with a far-away look in his eyes as if he were looking way back to the time he was to tell about. At last, just as Peter Rabbit was beginning to lose patience Mr. Quack began.
 
"It must be, Peter," said he, "that my great-great-ever-so-great-grandfather lived just about the same time as your great-great-ever-so-great-grandfather, way back in the days when the world was young. Perhaps they knew each other. Perhaps they were acquainted just as you and I are now. Anyway, according to what has been handed down in the family, Grandfather Quack was very much such a looking fellow as I am now, except in the matter of his bill and feet. His bill was not broad like mine but more like the bills of other birds, and his feet were like the feet of Mr. Grouse and Bob White. They were made for scratching, and there was nothing between the toes. You see, Old Mother Nature was experimenting. She made everybody a little different from everybody else and then started them forth in the Great World to shift for themselves and to find out what they really needed that they hadn't got.
 
"Old Mr. Quack, my great-great-ever-so-great-grandfather, soon discovered one thing, and that was that his legs were too short for him to get around very fast. When he walked, everybody laughed at him. When he tried to run, they laughed harder than ever. He didn't mind this so very much, though he did a little. Nobody likes to be laughed at, especially when it is because of something they cannot help. But what he did mind was the fact that his neighbors could run about so much fas............