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Rh opportunity! No one would doubt the property of a man who manufactured ammunition for the government. The natural thought was that any attempts by Germans here would be directed against the furnaces or Alden personally. It was ideal. All that was necessary was to scare the servants away and keep Alden in the house while his wife and the rest made ready for it."

"Still those men in the woods?" Garth asked.

"They were probably working at the furnaces. When you saw them they were on their way to the boat-house to make the necessary alterations. And, of course, they carried all the supplies there. You see, I went to the freight agent of the only railroad that runs to Deacon's Bay. He helped me a lot. We found that a large number of heavy cases had been sent here and to nearby stations, falsely invoiced and labelled to be called for. He had suspected gasolene in one of them and was about to hold up further shipments. That settled it for me. I knew you were going blindly, so I took the next train."

"How did you learn about the signal?" he asked.

"I came very quietly," she answered, "a little like a sneak-thief, I'm afraid. That front window is a little open. I overheard Mrs. Alden and a huge man. Of course she was only to light that signal if the game was wholly up. It meant to them that there was a party big enough to handle the lot of them. So I made up my mind I must