“This has been a pretty good day for aërial work, Frank,” suggested Billy. “What about the prospects for to-morrow?”

“I think we can count on it holding about as it is for another twenty-four hours,” came the answer, “and then a change is about due. It’s still cold enough to snow, and I expect we’ll meet a lot of snow squalls when we’re making that trip up the Belgian coast.”

“Do you really believe there’ll be that many seaplanes in the bunch—thirty or more, the Major told us?”

“They have planned to make this raid a record breaker, it looks like,” said Frank, “and will try to get out every machine they have a pilot for. It’s going to be a feather in our caps to be able to say we accompanied them, no matter what amount of damage they manage to inflict on the submarine bases, or railway stations and gas or oil tanks of the German army.”

“Well, I think we’re in great luck to get the chance to go along, Frank; though, of course, we don’t mean to throw a single bomb, or do the least thing to harm the Kaiser’s army. As I look at it the main purpose of our being allowed to accompany the squad of raiders is to let them see what cards we’re holding in this invention of Dr. Perkins. The French Government officials want to be shown, just as if they were from Missouri.”

“They’ll see a few things calculated to make them open their eyes, unless I miss my guess,” said Frank, with quiet confidence; for he knew what the Sea Eagle type of hydro-aëroplane was capable of doing when properly handled, and only longed for the opportunity of showing those British aviators, some of them well-known air pilots, the crowning triumph of Yankee ingenuity.

“It’s getting on toward evening now, with the sun near setting time,” remarked Billy, as though he felt that a load was taken from his shoulders with the passing of that almost interminable day.

“There’s a steamship coming in,” Frank said. “It’s taking all sorts of chances of being torpedoed, even if the Germans have said they are holding back until the eighteenth to start the reign of terror.”

“Do you really think the submarine blockade is going to work?” asked Billy.

“Honestly I don’t see how it can,” Frank replied. “They have only a certain number of the latest undersea vessels capable of staying away from a base for a week. These can’t be everywhere, and are liable to be sunk by torpedo boats. I’ve no doubt the Germans will punch holes in a good many small steamers; but as a rule the big ones can run away from them. I guess it’s a whole lot of a bluff, between you and me.”