I'm not afraid to try it." "Oh, you go ahead and do it," put in Sam, who knew that his big brother's heart was set on showing Dora what he could do with the flying machine.
"We'll go up and try it," answered Dick, at last.

"If she works all right, I'll head her for the seminary; otherwise I'll bring her down again;" and so it was arranged.
A number of the students had come out to see the flight and they gave a cheer as the big biplane rushed over the campus and then arose like a bird in the air.

As the machine went up, Tom looked to one side and saw Dudd Flockley standing on the campus, in company with a student named Andy Yates.

Both were sneering at the Rovers and their friends.
"The pair that tried to damage the machine," muttered Tom to himself.

He knew that since Larkspur and Koswell had left Brill, Flockley and Yates had become quite friendly, and he also knew that Yates was a spendthrift and had a reputation far from good.
Up and up went the biplane, guided by the steady hand and keen eye of Dick.