"There's the road to Dunkirk and Calais that the Kaiser said his men would tramp along in time to be in town at Christmas," laughed Billy, pointing his gloved hand downward to where could be seen various detachments of marching troops, with scores of huge motor vans taking supplies out along the fighting line for the men who held the trenches, and the bridge-heads across the river.

"The British, with reinforcements coming up every day, seem to be holding all the ground around here," Frank was saying. "Can you see Dunkirk yet, Billy?"

The Boy Aviators with the Air Raiders — Part 39

"Oh! yes, easily enough. It isn't such a great distance away from where the fighting is taking place. They've heard the roar of the big forty-two centimeter German guns at Dunkirk more than once this winter."

The Boy Aviators with the Air Raiders — Part 39

Still lower they dropped, until at less than a thousand feet they sailed along, now over the water, with the Channel on their right, and the disputed shore of France to the left.

The Boy Aviators with the Air Raiders — Part 39

"Will you alight on the water, and then head straight for our hangar, Frank?"

"That is the easiest way to do it," came the answer, as though Frank had every detail mapped out in his head.

"I warrant you Pudge is standing somewhere, and watching us come along, with his heart beating furiously, ready to fairly hug us after we get ashore."

Billy grinned as he thus pictured the delight of their fat chum on hearing how magnificently the gallant _Sea Eagle_ had disported in the air high above the German Headquarters, and what a spasm of alarm their coming had sent to the hearts of the various air pilots belonging to the invaders.

With the grace of a monster swan, the seaplane circled around several times and then alighted on the bosom of the water, as softly as floating thistle down. Equally at home in the air or on the water, the strange hybrid craft immediately commenced to move along in the direction of the wooden inclined plane leading by a gradual rise from the water into the elevated hangar.

So ended the amazing and satisfactory trial trip of the _Sea Eagle_.

"Mumps and mathematics, but I'm glad to see you boys get back safe again!"

Of course that was Pudge, otherwise Ulysses Perkins, expressing his gratitude at the return of the gallant _Sea Eagle_ and the two bold air navigators.