Breakfast was served at a mile and a quarter above the earth, Mr. Glassford having decided to go higher in search of a different current that would carry the Comet in a more southerly direction. The upper regions, however, did not seem to furnish what he wanted, and after sailing along for several miles he decided to drop back toward the earth again. Accordingly, the depression rudder was set, and the pointed nose of the motor ship was aimed at terra firma.

They ran into a bank of white, fleecy clouds, and for a time nothing could be seen but them, for the travelers were enveloped as in a dense fog. Then they dropped through that, and saw spread out below them a big open stretch of country.

But something else was also below them. The three boys, who were in the cabin, all saw it at once, and their cry attracted the attention of Mr. Glassford.

“The red balloon!” cried Jerry. “It’s the red balloon from Park Haven! It’s ahead of us! Let’s race it, Mr. Glassford.”

The inventor was not at all unwilling to try conclusions with his rival, especially since a whole day had passed and the red airship was still ahead. It was time for the Comet to show what she could do.

The ship was sent down until it was about on a level with the red balloon. Then Mr. Glassford speeded up the motor to overtake his rival, that was over a mile ahead.

The boys took turns watching it through the telescope, and they could note that the four men on the red craft were also observing them through glasses.

“Do you think we can beat them?” asked Bob anxiously.

“We’ve got to,” replied Jerry. “Leave it to Mr. Glassford.”