"Get in there! Stay in! No yawping!" The terse orders ended in a flash of grim humor. "You're sick. Mind you don't get worse."

Ashton was already slinking into his apartment.

There was a rumble of freight cars outside. Blake spun about on his heel and rushed out through the vestibule.

CHAPTER XXXIII

ABOVE THE ABYSS

A train loaded with steel was backing out to the bridge. Blake ran down the track to the engine and swung up into the cab.

"Stop her!" he shouted.

The engine-driver was among the men who had been introduced to Blake on his visit with Griffith. He recognized the engineer at the first glance.

"Hello, Mr. Blake!" he sang out. "You here?"

"Brakes!" cut in Blake so incisively that the driver closed his
throttle and applied the airbrakes with emergency swiftness.
Anticipating his questions, Blake tersely explained: "Bridge in danger.
I'm in charge. Have you a lot of empties handy?"