"Sure thing, Aleck. And you'll want to go, too, before long. Think of flying along like a bird!" And Tom Rover spread out his arms and moved them slowly up and down. "Oh, it's grand!"

"Yo' won't be no bird when yo' come down ker-flop!" murmured Aleck, soberly. "Yo' will be all busted up, dat's wot yo'll be!"

"We won't fall, don't you worry," continued Tom. "This biplane is a first-class machine, warranted in all kinds of weather."

"If it am a flyin' machine wot fo' you call it a biplane?" asked the colored man curiously.

"Bi stands for two," explained Dick. "A bicycle means two cycles, or two wheels. A biplane means two planes, or two surfaces of canvas. This biplane of ours, as you can see, has two surfaces, or decks, an upper and a lower. A monoplane has only one plane, and a triplane has three. Now you understand, don't you, Aleck?"

"I dun reckon I do, Massa Dick. But look yeah, boys, yo' take my advice an' don't yo' try to sail frough de air in dat bicycleplane, or wot yo' call it. 'Tain't safe nohow! Yo' stick to de hosses, an' dat autermobile, an' de boat on de ribber. A boy wasn't meant to be a bird nohow!"

"How about being an angel, Aleck?" asked Tom, slyly.

"Huh! An angel, eh? Well, if yo' go up in dat bicycleplane maybe yo' will be an angel after yo' fall out, even if yo' ain't one when yo' starts." And with this remark Aleck Pop hurried away to his work in the house.

"That's one on you, Tom," cried Dick, with a broad smile. "Poor Aleck! he evidently has no use for flying machines."

"Well, Dick, now the machine is together, it does look rather scary," answered Tom Rover, slowly. "I want to see that aviator try it out pretty well before I risk my neck going up."