There's room enough
for you on your own side, and you might be hurt."

"And you two be careful," said Nan to Flossie and Freddie. "Stay on your
own side."

The two small twins said they would do so.

"Now for a last coast!" cried Bert, when Tommy had been given a number
of rides on the bob-sled. "It's time to go home to supper."

"Maybe we can come out after supper," said Nan. "There's going to be a
lovely moon, and coasting by moonlight is fine."

"Maybe we can," Bert said. "Come on, Tommy," he called. "This is our
last coast before supper."

"All right," Tommy answered. He had walked up the hill, pulling after
him the sleds of Flossie and Freddie, who liked to have him help them in
this way.

"Last coast, little ones!" Bert called to the small twins. "Then it's
time to go home."

"Whose turn is it to steer?" asked Charley Mason.

"Yours, I guess," Bert answered. "Tommy, you can sit right behind
Charley and watch how he does it. Then next time you come out on this
hill we'll let you steer."

"Thanks!" exclaimed Tommy. He had been anxious to take hold of the wheel
himself, but he did not like to ask.

On the bob-sled the boys and girls took their seats. Bert was on the
back sled, to push off and ring the bell.

"All ready?" he called.

"All ready," answered Charley.

Bert gave a push and the bob-sled started down hill. On either side were
other bob-sleds and single sleds, while farther off, to the right, were
streams of smaller boys and girls.

Clang! Clang! went the bell, as Bert rang it.

The bob-sled was about half-way down the hill when Nan, sitting next to
Tommy, who was behind Charley, gave a cry.

"Oh, look!" Nan exclaimed. "Flossie and Freddie! They're going to get
right in our way! Steer out, Charley!"

The little Bobbseys, in taking their last coast, had come too near the
part of the hill where the big sleds were.

"Flossie! Freddie!" cried Nan. "Look out! Steer away!"

But they did not seem able to do it.

"I guess we won't run into them," Charley said. He was trying as hard as
he could to keep to one side.

All at once the bob-sled struck a lump of ice, and the front sled jumped
into the air. Charley Mason was jarred so hard that he rolled off. The
bob-sled swayed from side to side when no one was steering it.

Then Flossie and Freddie, on their sleds, steered right over in the way
of the bob-sled. They could not help it, they said afterward, and that
was probably true, for the