was so quiet that they could hear the
barking of a dog at a farmhouse a mile away. They were far enough
out from the bank to have nothing to fear from Reddy Fox or Old
Man Coyote. So they had nothing to fear from any one save Hooty
the Owl. It was for Hooty that they took turns in watching.
It was just the hour when Hooty likes best to hunt.

By and by they heard Booty's hunting call. It was far away in the
Green Forest, Then Mr. and Mrs. Quack felt easier, and they
talked in low, contented voices. They felt that for a while at
least there was nothing to fear.

Suddenly a little splash out in the Big River caught Mr. Quack's
quick ear. As Mrs. Quack brought her head up out of the water,
Mr. Quack warned her to keep quiet. Noiselessly they swam among
the brown stalks until they could see out across the Big River.
There was another little splash out there in the middle. It
wasn't the splash made by a fish; it was a splash made by
something much bigger than any fish. Presently they made out a
silver line moving towards them from the Black Shadows. They knew
exactly what it meant. It meant that some one was out there in
the Big River moving towards them. Could it be a boat containing
a hunter?

With their necks stretched high, Mr. and Mrs. Quack watched.
They were ready to take to their strong wings the instant they
discovered danger. But they did not want to fly until they were
sure that it WAS danger approaching. They were startled, very
much startled.

Presently they made out what looked like the branch of a tree
moving over the water towards them. That was queer, very
queer. Mr. Quack said so. Mrs. Quack said so. Both were growing
more and more suspicious. They couldn't understand it at all, and
it is always best to be suspicious of things you cannot
understand. Mr. and Mrs. Quack half lifted their wings to fly.

CHAPTER XXX: The Mystery Is Solved

It was very mysterious. Yes, Sir, it was very mysterious.
Mr. Quack thought so. Mrs. Quack thought so. There, out in the Big
River, in the midst of the Black Shadows, was something which looked
like the branch of a tree. But instead of moving down the river, as
the branch of a tree would if it were floating, this was coming
straight across the river as if it were swimming. But how could the
branch of a tree swim? That was too much for Mr. Quack. It was too
much for Mrs. Quack.

So they sat perfectly still among the brown stalks of