"Just thirty-five hours, four minutes and eight seconds!" was the answer.

"Over half the estimated time gone, and we re only a third of the way there!" exclaimed the young millionaire. "I'm afraid we aren't going to do it, Mr. Vardon."

"Well, I'm not going to give up yet," the aviator answered, grimly. "This is only a start. We haven't used half our speed, and when we get closer to the finish we can go a hundred and twenty-five miles an hour if we have to—for a spurt, at any rate. No, I'm not giving up."

"Neither am I," declared Dick, for he was not of the quitting sort.

Floating on the surface of Lake Michigan was like being on the ocean, for they were out of sight of land, and there were no water craft in view. The Abaris seemed to have the lake to herself, though doubtless beyond the wall of the slight haze that hemmed her in there were other vessels.

"Well, now to see what the trouble is," suggested Dick. "It must be somewhere in the connecting joints of the levers, for the rudder itself seems to be all right."

"But we'd better begin out there and make sure," suggested Mr. Vardon. He pointed to the rudder, which projected some distance back of the stern of the aircraft.

"How you going to get at it to inspect it?" asked Paul. "It isn't as if we were on solid ground."

"And no one has long enough a reach to stretch to it from the deck," added Innis.

"You forget our collapsible lifeboat," Dick answered. One of those useful craft was aboard the airship. It could be inflated with air, and would sustain a considerable weight.