The Bubbling Brook was slowly drying up. Everyone on the Sunny Meadow was worried, and the little people who lived in the water were even more worried.
It was just like having one's house pulled down while living in it. You see, as the water became more shallow there were places in the little brook that were hardly covered with water, and it was only in the deep holes that the fish and crabs could swim at all.
And the cause of all this was Busy Beaver. Yes, sir. Busy Beaver was building a dam across the Bubbling Brook.
Somehow he knew that winter was coming, when it would be all frozen over. But he knew that if he built a dam across it, a little pond would form where the water would be too deep to freeze clear down to the bottom.
"I'll leave a little opening in the dam to let the water run out when it gets high enough," said Busy Beaver to himself as he laid mud and stones on top of a log.
If the Little People of the Sunny Meadow had only heard him they wouldn't have been so worried. Little Jack Rabbit did, though, as he came hopping down the Shady Forest Path.
"Good morning," said the little bunny.
Busy Beaver looked up from his work. He had almost finished a mighty good job. First, he had cut down a tree, and then sawed it with his sharp teeth into logs. These he had rolled into the water, weighting them down with stones and mud until gradually he had built up a splendid dam from the bottom of the pond.
"It's almost finished," said Busy Beaver. "It took me quite a long time, for sometimes the logs would bob up and drift away, and I'd have to begin all over again. But I kept at it, and now I've got a nice dam to hold back the water."
"Why do you want deep water?" asked the little rabbit.
"Come over here and I'll show you," answered Busy Beaver, leading Little Jack Rabbit around to the end of the dam nearest the Shady Forest. "There, you see my house. Now the water must be deep enough so that when it freezes my front door will always be below the ice. Otherwise I wouldn't be able to swim in and out."
"How soon will the Bubbling Brook start running again?" asked the little bunny.
"Pretty soon—maybe tonight," answered Busy Beaver.
"Hurrah! I'll tell my friend the little Fresh Water Crab!" and away hopped the little rabbit to the Sunny Meadow.