The apron is operated by gearing from the rear wheels of the grader.
The surface is finally smoothed by means of the grader and drag.
"If you're in Miss Ames' room, you are a fourth grader," said Mr. Oliver pleasantly.
The grader gang formed a ring about the combatants and waited.
Pike, he said, had come out as a grader, but it had been a long time since he had done any work.