"Now you see an illustration of my theory," cried the delighted Doctor. "Here are we in a gale; below, scarcely a breath of air is stirring. It did not work in Russia, and we were obliged to anchor. But I shall regard that as a providential affair and shall stick to my theory. I would not for anything have failed to plant the good seed which we left there. Great good will come of it, and it may be the commencement of a general recognition throughout all Europe of God's great law of cure. If so, I shall count that as of infinitely greater importance than the location of the North Pole." The wind veered to the northwest toward evening, and a consultation of the map showed that they were heading precisely as they wished to. On the following morning, they crossed what the Professor informed them was the Lake of the Woods. "Before noon we shall be well into Northern Minnesota. We are peculiarly favored upon this trip. It is very doubtful whether we would encounter so many favorable gales in any number of future trips." "We are not home yet, Professor, and we may have an opportunity to test the Doctor's theory as to air currents," said Will. Soon after breakfast a further change in the wind occurred, and they found themselves going due east. They watched through their glasses the foliage below, but could see no difference in the direction of the lower atmospheric stratum. "We will go as we look for a time," said the Doctor. "What do I see yonder!" cried Denison. "A train of passenger cars, sure as you live! That must be the Canadian Pacific." "It is," replied Professor Gray. "And away to the south, you see Lake Superior. We are passing along its northern coast." "Don't those little settlements look beautiful!" said Mrs. Jones. "See the little white church yonder with its tiny spire! It just seems to me as if I should like to stop and attend service in that pretty little church." "See the people rushing out to look at us!" observed Dr. Jones. "Suppose we lower to within a few hundred feet of them, and give them a good sight at the ship." Accordingly Silver Cloud settled rapidly as it neared the little town. They crossed the village at a height of about 500 feet. They could see that the people were terribly frightened. Some were lying upon the ground as if dead; others were upon their knees with their hands stretched toward the globe that glistened like a star in the sunlight. Many were rushing screaming into their houses. A few could be seen fleeing from town, afoot or horseback, at the top of their speed. "Don't be alarmed, good people," shouted Dr. Jones. "We are only aeronauts who have been to the North Pole. Good-bye!" "I won't do that again," said he. "Some of those people may die from the effects of this fright. But here we are again for home." Silver Cloud had again mounted skyward and encountered a splendid breeze from the north. A few moments later the blue, crystal waters of Lake Superior were undulating beneath them.