This was the reason why the auto, though it had been pulled out of
Charlie's pocket with his handkerchief and had fallen into the aisle
down which it ran, did not very soon get where Miss Bradley could see
it. She could hear the buzzing sound, but she did not know what it was.

"Who is making that noise?" she asked again.

No one answered, for, truth to tell, neither a boy nor a girl in the
room was causing the noise; though of course Charlie was to blame, in a
way.

Miss Bradley was looking over the room, into the faces of her pupils.
The buzzing sound kept up. It seemed to be coming nearer and nearer. The
windows were open, and she thought a bee or a wasp might have flown in.
But it would be a very large wasp or bee, indeed, which would make so
loud a buzzing sound as this.

"Children----" began Miss Bradley, and then she suddenly stopped, for
something struck her on the foot. And it was right near her foot that
the buzzing noise sounded. But as she had walked a little way down from
her platform, and her foot was partly under the first desk--that of fat
Bobbie Boomer--Miss Bradley could not see what had struck her.

"Oh!" she cried, as she jumped back, rather startled.

Charlie Star and Bunny Brown could not help laughing right out loud.
They knew what had caused all this excitement.

A moment later Miss Bradley knew also. For Charlie's buzzing auto,
having struck her foot, turned aside and rolled out on the floor in