Obediently Paddy climbed out and returned to the fallen tree. There he picked up one of the long branches in his mouth, grasping it near the butt, twisted it over his shoulder and started to drag it to the canal. When he reached the latter he entered the water and began swimming, still dragging the branch in the same way. Once more Old Mother Nature stopped him. “You've shown us how you cut trees and move them, so now I want you to answer a few questions,” said she. Paddy climbed out and squatted on the bank. “How did this canal happen to be here handy?” asked Old Mother Nature. “Why, I dug it, of course,” replied Paddy looking surprised. “You see, I'm rather slow and clumsy on land, and don't like to be far from water. Those trees are pretty well back from the pond, so I dug this canal, which brings the water almost to them. It makes it safer for me in case Old Man Coyote or Buster Bear or Yowler the Bobcat happens to be looking for a Beaver dinner. Also it makes it very much easier to get my logs and branches to the pond.” Old Mother Nature nodded. “Just so,” said she. “I want the rest of you to notice how well this canal has been dug. At the other end it is carried along the bottom of the pond where the water is shallow so as to give greater depth. Now you will understand why I called Paddy an engineer. What do you do with your logs and branches, Paddy?” “Put them in my food-pile, out there where the water is deep near my house,” replied Paddy promptly. “The bark I eat, and the bare sticks I use to keep my house and dam in repair. In the late fall I cut enough trees to keep me in food all winter. When my pond is covered with ice I have nothing to worry about; my food supply is below the ice. When I am hungry I swim out under the ice, get a stick, take it back into my house and eat the bark. Then I take the bare stick outside to use when needed on my dam or house.” “How did you come to make this fine pond?” asked Old Mother Nature. “Oh, I just happened to come exploring up the Laughing Brook and found there was plenty of food here and a good place for a pond,” replied Paddy. “I thought I would like to live here. Down where my dam is, the Laughing Brook was shallow--just the place for a dam.” “Tell us why you wanted a pond and how you built that dam,” commanded Old Mother Nature. “Why, I had to have a pond, if I was to stay here,” replied Paddy, as if every one must understand that. “The Laughing Brook wasn't deep or big enough for me to live here safely. If it had been, I would have made my home in the bank and not bothered with a house or dam. But it wasn't, so I had to make a pond. It required a lot of hard work, but it is worth all it cost.