“Well, it would come to the same, whoever let it off,” said Muller.

“They’d be rather astonished if they pulled the trigger,” said the taller, with a sinister laugh. “Ha, ha! fancy their faces! It’s not a bad bit of workmanship, I flatter myself.”

“No,” said Muller. “I hear it is your own design, every bit of it, isn’t it?”

“Yes, the spring and the sliding shutter are my own.”

“We should take out a patent.”

And the two men laughed again with a cold, harsh laugh, as they took up the little brass-bound package and concealed it in Muller’s voluminous overcoat.

“Come down, and we’ll stow it in our berth,” said Flannigan. “We won’t need it until to-night, and it will be safe there.”

His companion assented, and the two went arm-in-arm along the deck and disappeared down the hatchway, bearing the mysterious little box away with them. The last words I heard were a muttered injunction from Flannigan to carry it carefully, and avoid knocking it against the bulwarks.

How long I remained sitting on that coil of rope, I shall never know. The horror of the conversation I had just overheard was aggravated by the first sinking qualms of sea-sickness. The long roll of the Atlantic was beginning to assert itself over both ship and passengers. I felt prostrated in mind and in body, and fell into a state of collapse, from which I was finally aroused by the hearty voice of our worthy quartermaster.

“Do you mind moving out of that, sir?” he said. “We want to get this lumber cleared off the deck.”