showing, and, when on high, Tom started the motor at full speed. The great propellers noiselessly beat the air, and the powerful craft was headed for Lake Ontario.
"They're pretty good, if they attempted to cross the lake to-night," observed the young inventor, as he looked at the barometer.
"Why so?" asked Ned.
"Because there's a bad storm coming up. I shouldn't want to risk it. We'll keep near shore. We can nab them there as good as over the lake."
This plan was adopted, and as soon as they reached the great body of water—the last in the chain of the Great Lakes—Tom cruised about, he and Ned watching through powerful night glasses for a glimpse of another airship.
Far into the night they sailed about, covering many miles, for Tom ran at almost top speed. They sailed over Niagara Falls, and then well along the southern shore of Ontario, working their way north-east and back again. But not a sign of the smugglers did they see.
Meanwhile the wind had arisen until it was a gale, and it began to rain. Gently at first the drops came down, until at length there was a torrent of water descending from the overhead clouds. But those in the Falcon were in no discomfort.
