There was no doubt of it a few moments later. With the Osprey rushing forward and the mountain storm coming to meet the craft, it was only a short time before the airline express was in the midst of a violent outburst of the elements.

“Whew, this is fierce!” cried Tom, as there came a blinding flash, followed by a terrific clap, and then, almost immediately after, by a shower of rain as if a cloud had burst above them.

CHAPTER XXI
THE GOLDEN GATE

Caught in the very center of a fierce mountain storm, the Osprey was now battling her way above the jagged and towering peaks of the Rockies, fighting for every inch in an endeavor to reach San Francisco within the stipulated time. Though by the clock there were several hours of daylight still remaining, it was so dark and gloomy in the stormy mountain region that it seemed as if night had fallen.

“But we may pull out of it yet!” cried Tom to his friends, as he saw to it that all the openings of the traveling car were tightly closed. For once the air, under high pressure because of the velocity of the wind, gained an entrance, it might do serious damage. But Tom had foreseen that they might run into storms, and had so built his car that a few pulls on certain levers would close everything save the protected ventilators.

Through these fresh air came in and the foul air was expelled, but rain could not enter. It was different in the aeroplane above the car, however. There the mechanician and his assistant were pretty much in the open, though there was a cowl of heavy celluloid to protect their faces and Tom had rigged up an extra hood to keep off some of the rain and snow that might be encountered on the trip. But from the very nature of their calling, aeroplane pilots must fly with much of their bodies exposed to the elements.

When they expect to go to great heights and encounter cold of such intensity that it is hard to conceive of it, they wear suits in which are woven wires of high resistance. A low voltage electric current, passing through these wires, warms them, just as is done in some of the warming pads used in bed by invalids. In this way the blood of the daring aviators is kept circulating.

But as Tom did not expect to go very high on his airline express trips, there was no need of these electrically heated suits, and none had been taken along. However, he had taken into consideration that they might run into rain, and rubber coats had been provided.

“I’ll go up and relieve Ted Dolan,” remarked Tom to Ned, for the third crew of pilots had been taken on at Denver to make the final hop to the Pacific coast. Dolan was an experienced airman and had for his helper Art Wright. But they had not taken their rubber coats up in the cockpit with them, for when they left Denver the weather was all that could be desired.

“I’ll go with you,” offered Ned. “I’d like to see just how bad this storm is.”