Crack! Crack! Crack! Crack!

Ralph's strained hearing caught these sounds vaguely. All his attention was centered on the locomotive apparently speeding to sure disaster.

The next instant, however, he became aware that in some mysterious way these noises signalized his rescue from a terrible situation.

The lever rods his hands clasped vibrated harshly. As if by magic that glue-like suction tension on his fingers was withdrawn.

His hands still burned and tingled, but a great gasp of relief left his lips. His eyes fixed on the rushing engine, his hands now pulled the levers in order.

Not six inches from taking the in main rails, not eight seconds from reducing the accommodation to a heap of kindling wood, the "chaser" shot switch eleven, and glided smoothly to the terminus. Its serene crew never dreamed how they had grazed death by a hair's breadth.

Ralph half fell between the levers. He felt that his face must be the color of chalk. His strength was entirely spent. He still grasped the levers, hanging there for a moment like a person about to faint.

Fortunately there was no call for switch-tower service during the ensuing minute or two. Ralph tried to rally his dazed senses, to comprehend what was going on below.

For again a swishing, cracking, clattering sound rang out. This time it was followed by a curdling cry of pain.

"You'll blind me--you're tearing my hair out by the roots!" screamed a voice which Ralph instantly recognized.