It was promptly answered by one from below, which whirled past her and shattered itself against the wall.
"Dare, dare, double dare!" she called as she flung handfuls of loose snow from the window-ledge.

A quick volley of balls followed, then the door burst open.

Sandy and Ruth Nelson stood laughing on the threshold.
"Hello, partner!" sang out Sandy to Jimmy.

"Still at the old work, I see! Do you mind how you taught me to count the change when I first sold stamps ?" Jimmy tried to smile, but his effort was a failure.

The interesting tangle of facts and circumstances faded from his mind, and he resorted instinctively to nature's first law.