Page:Air Service Boys over the Rhine.djvu/175

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THE BIG GUN
165

fact the very nature of the work makes for comradeship.

Tom and Jack knew, slightly, the officer to whom Major de Trouville referred. Lieutenant Laigney was an ordnance expert, and the inventor of a certain explosive just beginning to be used in the French shells. It was simple, but very powerful.

"You must tell him what you observed—the strange colored lights, my boys," said the major. "By the way, I hope you carefully noted the time of the colored flares."

Tom and Jack had. That was part of their training, to keep a note of extraordinary happenings and the time. Often seemingly slight matters have an important bearing on the future.

They found Lieutenant Laigney in his quarters, making what seemed to be some intricate calculations. He saluted the major and nodded to the boys, whom he had met before.

'"Lieutenant," began Major de Trouville, "these young gentlemen have something to tell you. I want you to think it over in the light of what you told me about the action of that new explosive you said the Germans might possibly be using."

"Very good. Major. I shall be delighted to be of any service in my power," was the answer.