THE TRYOUT

Tom Swift took his place in the driver's seat of the House on Wheels. This compartment was not unlike the front seat in any large, van-like truck, except that it was more comfortable and was equipped with a number of dials, indicators and controls.

"Well, Ned, coming?" asked the young inventor, looking down at his chum and smiling.

"I guess so, if you're quite sure she won't blow up."

"If she does, we'll go together!" joked Tom.

It was the day of the tryout, and while some work yet remained to be done on the new machine, it was in shape for a road test. It had been run around the big yard of the Swift plant and had acted in a satisfactory manner. What it would actually do under road conditions and off the level, was something yet to be demonstrated.

The big twelve-cylinder motor had met the block test and had been able to propel the heavy car around the shops. Tom felt sure there was plenty of reserve power, or would be when it had been tuned up.

Ned now climbed to the seat beside his chum. There was room for three in this compartment, but though Mr. Damon had been invited to come over for the initial run, the eccentric man had not appeared.

With Ned on the seat beside him, Tom touched his foot to the button of the self-starter and with a roar the powerful motor sprang into life. Though it was big and had the strength of many horses, so well was it balanced that there was hardly any vibration, which spells the death knell of many machines otherwise perfect.

Letting the motor warm up a bit, Tom carefully tested the various gear and control levers. Then, gently letting in the clutch, the House on Wheels rolled slowly out of the shed where it had been constructed.