woman would the threads of an intricate knitting piece. He directed the locomotives and trains up and down that puzzling network of rails, like puppets moved by strings. In ten years' service he had never been responsible for an accident or a wreck.
Old Jack, therefore, having never made a mistake in railroading, had little patience with the careless, lazy specimen whom he had just ordered out of the place.
Mort Bemis had been his assistant in the tower. The fellow's record had always been full of flaws. He was slow and indifferent at the levers. He associated with a shiftless crowd outside. He borrowed money and did not pay it back. He was unreliable, disagreeable, and unpopular.
Three days previous, old Jack was adjusting a heavy weight bar on the lower story of the switch tower.
Mort, upstairs, was supposed to safely hold back a spring-bar apparatus while his superior was fixing the delicate mechanism below.
His mind everywhere except on his task, Mort for an instant took his hand off the bar to wave a recognition to a chosen chum, "flipping" a passing freight train.
There was a frightful yell below. Mort, terri-
