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Rh them such astounding news, and it was easy to calculate their rate of progress.

After running about a hundred miles or so, at high speed Mr. Sharp found it necessary to slow down the motor, as some of the new bearings were heating. Still this gave them no alarm, as they were making good time. They came to a stop that night, and calculated that by the next evening, or two at the latest, they; would be back in Shopton. But they did not calculate on an accident.

One of the cylinders on the big motor cracked, as they started up next morning, and for some hours they had to hang in the air, suspended by the gas in the container, while Mr. Sharp and Tom took out the damaged part, and put in a spare one, the cylinders being cast separately. It was dusk when they finished, and too late to start up, so they remained about in the same place until the next day.

Morning dawned with a hot humidness, unusual at that time of the year, but partly accounted for by the fact that they were still within the influence of the southern climate. With a whizz the big propellers were set in motion, and, with Tom at the wheel, the ship being about three miles in the air, to which height it had risen after the repairs were made, the journey was recommenced.