"Have you been out of the stateroom?"

"Yes."

"What for?"

"To get a glass of water."

There was a vessel of water in the cabin, and this seemed plausible enough.

"Any chance of doing anything to-night?"

"No, I think not."

Vincent sank back on his pillow, and Graham got back into his berth. Quietly he drew the wallet from his pocket, in which he had placed it, and eagerly opened it. The huge roll of bills was a pleasant and welcome sight.

"There's all of six hundred dollars here!" he said to himself. "I mustn't let Vincent know that I have them."

It occurred to Graham that, of course, Mr. Waterbury would proclaim his loss in the morning, and it also occurred to him that he might be able to fasten suspicion upon Tom, who, as his roommate, would naturally have the best chance to commit the robbery. One thing might criminate him—the discovery of the wallet upon his person. He therefore waited till Vincent was once more asleep, and, getting up softly, made his way to the deck. He drew the bills from the wallet, put them in an inside pocket, and threw the wallet into the river.