Then it was Mark who shouted:

"There's that 'plane again, Jack I Look out for her!"

The enemy had missed them. She was some miles away, and although still
on a level above, at the pace the _Snowbird_ was now traveling it would
take a fast flying machine indeed to overtake her.

The pursuit of the enemy (which they all believed to be the smuggler,
manned by Bainbridge and his friends) was not kept up for long. By
eight o'clock the _Snowbird_ had dropped the other machine below
the horizon, and the swift pace at which they had driven the _Snowbird_
was rapidly bringing them once more toward Canada.

The storm had broken, but the clouds still hovered below them. They
descended about noon, passing harmlessly through the vapor which had
so long hidden the earth from them, and so came to within a thousand
feet of the ground, where they swung along at fair speed for some
hours.

They crossed the line, but did not descend until near St. Thomas. They
went out of their way a good bit to land near this town on the shore
of the St. Lawrence, for the flying machine had been so shaken in its
struggle with the thunderstorm that some repairs were needed.

They descended in a field on the edge of the town, gave the farmer who
owned the place a five-dollar bill to allow the machine to stand on
his land, and then engaged him to drive Professor Henderson and the
boys into town.