Never before had Tom been so exacting in his requirements of his air craft as when, the next day, the Humming-Bird was wheeled out to the flight ground, and gotten ready for the test. The young inventor went over every bolt, brace, stay, guy wire and upright. He examined every square inch of the wings, the tips, planes and rudders. The levers, the steering wheel, the automatic equilibrium attachments and the balancing weights were looked at again and again.
As for the engine, had it been a delicate watch, Tom could not have scrutinized each valve, wheel, cam and spur gear more carefully. Then the gasoline tank was filled, the magneto was looked after, the oil reservoirs were cleaned out and freshly filled, and finally the lad remarked:
"Well, I guess I'm ready. Come along, Mr. Damon."
"Am I going with you in the test?"
"Surely. I've been counting on you. If you're to be with me in the race, you want to get a sample of what we can do. Take your place. Mr. Jackson, are you ready to time us?"
"All ready, Tom."
"And, dad, do you feel well enough to check back Mr. Jackson's results? I don't want any errors."
"Oh, yes, Tom. I can do it."
"Very well, then. Now this is my plan. I'm going to mount upward on an easy slant, and put her through a few stunts first, to warm up, and see that everything is all right. Then, when I give the signal, by dropping this small white ball, that means I'm ready for you to start to time me. Then I'll begin to try for the record. I'll go about the course in a big ellipse, and—well, we'll see what happens."
While Mr. Damon was in his seat the young inventor started the propeller, and noted the thrust developed. It was satisfactory, as measured on the scale, and then Tom took his place.