as familiar with the aeroplane as with your pony which you have ridden for years and feel as much at home in your seat as if you had occupied it for months. It will take time to acquire that knowledge.”
“I am at home now,” replied Harvey, who could not help thinking his friend was over-cautious.
“Your danger is of having too much self-confidence. Remember and do exactly what I tell you to do and nothing else.”
The pupil assured his instructor of the strictest obedience.
“Very well.”
The Professor stepped to the rear, grasped a blade of the propeller and gave it a vigorous swing. That set the motor going with its deafening racket, but it was so throttled that the machine stood still for a minute or two, Sperbeck holding back all he could with one hand until the pressure became too great to resist. Then the aeroplane began moving forward, with fast increasing speed. When it had traveled a hundred yards, Harvey grasped the lever ready to point the front rudder upward upon receiving the order from the Professor. The noise of the motor would have drowned the loudest voice, and the youth kept glancing around for the expected signal. But it was not made. Instead, the Professor motioned with one hand for him to circle to the left. Harvey was disappointed but did not hesitate for an instant. He came lumbering and lurching over the sward, and, shutting off the motor, halted a few paces in front of his instructor, who had lighted a cigarette.
“It is best to cut grass for two or three days,” explained the teacher.
“It surely will not take that long,” replied Harvey in dismay.
“I trust not, but no ascent will be attempted to-day.”
Harvey forced himself to smile, though he made a comical grimace.
“Put me through the paces; I’m bound to learn this business or break a trace.”
Several spectators had gathered on the edge of the field and were watching the actions of the two with the aeroplane. They would have come nearer had not Harvey warned them by a gesture not to do so. He did not mind their enjoying the sight, for they could do that when a little way off as well as if closer, but they were likely to get in his way, and hinder matters.
Again and again the biplane went awkwardly forward on its three small wheels with their rubber tires. The field contained ten or twelve acres, thus giving plenty of space for maneuvering. Once he came within a hair of running into the fence, because as it seemed to him the machine did not respond with its usual promptness, but he showed rapid improvement and the Professor complimented him on his success.
“I’m playing the part of a navigator of a prairie schooner,” said the youth, “though they are drawn by animals instead of being propelled by wind. I suppose, Professor, that before the summer is over you will let me try my wings?”
“That depends upon how well you get on with your first lessons.”
CHAPTER II
BOHUNKUS JOHNSON
Suddenly a shout came from the edge of the field, and a negro lad vaulted over the fence and ran toward the couple. As he drew near he called:
“Why didn’t yo’ tole me ’bout dis, Harv?”
“I did call at your house for you, but Mr. Hartley said you were asleep.”
“What ob dat? Why didn’t yo’ frow a brick fru de winder and woke me up? Gee! What hab yo’ been trying to do, Harv?”
The newcomer was about the same age as Harvey Hamilton, but taller, broader and larger every way. He was the “bound boy” of a neighbor and had been a playmate of the white youth from early childhood. He was as much interested in aviation as Harvey, and had been trying to build an air machine for himself, or rather helping his friend to construct one, but their failure was so discouraging that they gave it up. What was the sense of attempting such a task when Mr. Hamilton stepped in and bought one of the best of aeroplanes for his son?
Professor Sperbeck had met Bohunkus Johnson, being first attracted by his odd name and then by the willingness and good nature of the colored youth. Bunk, as he was generally called by his acquaintances, was much disappointed because he had not been present earlier, but no one was to blame except himself. Shoving his hands in his pockets, he walked about the aeroplane, which he had admired upon its arrival, inspecting and trying to understand its workings.
“Hab yo’ flowed?” he asked, abruptly halting and looking at Harvey who retained his seat.
“Not yet.”
“Why doan’ yo’ do so? What’s de use ob fooling round here?”
“Professor Sperbeck thinks I should learn more before leaving the ground. How would you like to try your hand?”
Bohunkus took off his cap and scratched his head.
“I guess I’ll watch yo’ frow flipflaps awhile.”
Harvey turned to the Professor, who shook his head.
“You don’t wish to smash the biplane so soon. You will have enough tumbles without his help. If you are ready you may try it again.”
By this time Harvey had become somewhat accustomed to the sensitiveness of the machine. It required slighter movements of the lever than he had supposed and the response was sometimes quicker than he expected. He understood what his instructor meant by insisting that an aviator should become familiar with his machine.
Bohunkus was asked to hold the rear of the aeroplane until the revolving propeller acquired more velocity. The dusky youth buried his heels in the dirt and held the framework with might and main. The pull rapidly increased, while he put forth all his strength, which was considerable. The Professor gave no help, but trying to keep his face straight, watched things. Despite all he could do, Bunk was compelled to yield a few inches. He still resisted desperately, but while he could not add to his power, the uproarious motor fast did so. Suddenly it made a bound forward, and Bunk sprawled on his face, with his cap flying off. His hold had slipped and the machine shot forward with a speed far greater than any one of the three could have reached.
“Hang de ole thing!” exclaimed Bunk, climbing to his feet and brushing the dust from his clothes; “what’s de use ob it yanking a feller like dat?”
The roaring motor was too near for either of his friends to understand his words, but it was easy to imagine their substance.
When Harvey had completed his circuit of the field, Bunk asked that he might try his hand. He certainly was not lacking in assurance, but the Professor would not consent.
“You might do well, but the chances are you would not. You will get your chance after a time. You may ride with Harvey if you wish.”
With some hesitation, Bunk climbed into the seat behind his friend.
“Am yo’ gwine to go up?” he asked.
“Not at present. Why do you wish to know?”
“So I can jump if yo’ don’t manage things right.”
He grasped one of the supports on either side and braced himself. Naturally he was timid, but it did not seem to him there could be much danger so long as they remained on the ground. Half way round the field, his self-confidence returned, and his dark face was lighted with
