good-natured to lose his temper over a little thing like that.
He tried to think of something smart to say in reply, but Spotty is
a slow thinker as well as a slow walker, and before he could think
of anything, Billy was talking once more.

"This wall is what Farmer Brown's boy calls a dam," said Billy Mink,
who is a great traveler. "Dams are usually built to keep water from
running where it isn't wanted or to make it go where it is wanted.
Now, what I want to know is, who under the sun wants a pond way back
here in the Green Forest, and what is it for? Who do you think
built this dam, Grandfather Frog?"

Grandfather Frog shook his head. His big goggly eyes seemed more
goggly than ever, as he stared at the new pond in the Green Forest.

"I don't know," said Grandfather Frog. "I don't know what to think."

"Why, it must be Farmer Brown's boy or Farmer Brown himself," said
Jerry Muskrat.

"Of course," said Little Joe Otter, just as if he knew all about it.

Still Grandfather Frog shook his head, as if he didn't agree. "I
don't know," said Grandfather Frog, "I don't know. It doesn't look
so to me."

Billy Mink ran along the top of the dam and down the back side.
He looked it all over with those sharp little eyes of his.

"Grandfather Frog is right," said he, when he came back. "It doesn't