“He is right,” remarked Mitchell; “let us have dinner together.”
The old fellow who served the hotel as hostler was hired to stay by the machine and to keep every other person at a distance, while the three went in to their meal.
During these minutes, Harvey was on the watch for a sight of Detective Pendar. He much wanted to have a few words with him, but was puzzled how to bring it about. Harvey had given up his room, so he could not signal to the officer to follow him thither and there was no understanding as to how they should otherwise meet.
Pendar, however, remained invisible until Bohunkus had perched himself in the seat in front of the tank, and Harvey had his hands on the levers. Mitchell stepped to the rear to give a swing to the propeller blades. The machine was pointed to the left, where the highway showed quite a sharp slope downward, of which the young aviator meant to take advantage.
At this crisis, when twenty pairs of eyes were upon the party, Harvey heard an odd sounding cough. He looked around and saw a man standing on the porch above the other spectators. It was Detective Pendar, who was looking keenly at Harvey. As their eyes met the former rubbed his smooth chin thoughtfully and winked once, but made no other sign that he recognized the youth.
“Now what does he mean by that?” Harvey asked himself; “a wink may signify one of a score of things.” As the only reply he could make, he winked in return. A dozen of the group might have accepted it as meant for him, but, if so, he must have been equally puzzled with the author of the signal, who a minute later was scooting through the air and steadily rising.
Harvey had decided to carry out so far as he could the programme agreed upon the day before by him and Pendar. The only change was that caused by the enforced delay. Instead of making his search in the forenoon, it now would have to be done in the afternoon. He shot upward, until barely five hundred feet above the earth, and then headed westward over the long stretch of forest of which mention has been made. It was advisable that he should keep as near the ground as practical, since his view would thereby be improved.
Bohunkus Johnson was still in the dark on two points: he had no conception of the serious business upon which his companion was engaged, knowing nothing of the kidnapped child, and, though certain in his own mind that Professor Morgan was the man who had wrecked the aeroplane, he had never suspected that he was insane. Ignorance on the former point was a good thing, but as regards the latter it proved a serious mistake, as has been intimated in another place.
It need not be said that a heavier-than-air machine must progress rapidly in order to sustain itself aloft. When such motion stops, through breakage, accident or the will of the aviator, an aeroplane obeys the law of gravity and comes to the ground. It does not fall, as is the case with a balloon.
It would never do to withdraw care from the machine, which worked with perfect smoothness, but having headed westward and struck as moderate a gait as was practical, Harvey Hamilton gave all the attention possible to the country under his feet. He noted the wide expanse of forest in its exuberant foliage, a flashing stream of water and the foam of a tumbling cascade on the slope of the farther ridge. In the other direction wound the railway line over which he and Bunk had ridden earlier in the day. The sky was clear and sunshiny with a rift of fleecy clouds in advance, but at so great an elevation that no inconvenience was to be feared from them. The town of Groveton was so distinctly seen that he recognized several of the buildings, including the hotel, which he had observed on his brief visit. Far away in the radiant horizon the steeples and tall buildings of a city showed, but it was all strange to him. He could identify nothing beyond that which has been named.