A whirring of engines, click, clock, clitter clock, smote upon his ears.

“Come up,” says the 'bus driver, and the horses strain; “Clitter, clatter, cluck, clak,” the line of hurrying hansoms overtakes the omnibus going west.

The wings flapped jerkily, click, block, clitter clock, and the machines drove up; they spread and ceased, and the apparatus came soaring through the air.