"None of your business," snapped Hammer, unutterably relieved. "So it was a frame-up, eh? And Solomon never had the knife to your knowledge?"

"No, sir. It belonged to Mr. Schlak."

"Good Lord! Is that so?"

"Yes, sir. The sheath was hanging on his wall, but Mr. Jenson said to say nothing about it. The hands didn't know because they'd never been in his cabin and he generally carried another."

"Then we'll land Solomon—but why did he admit having had it?"

The other only stared dully at him, his face pale. The American had almost forgotten about Sara Helmuth in the light of this amazing revelation which his bluff had forced out of a clear sky.

He thought swiftly. Solomon must have admitted having had the knife in order to give better colour to the Arab's testimony, and the cleverness of it appalled Hammer, who had scarcely expected such astuteness from the fat supercargo.

Now, however, he determined to carry out the affair to the limit. He would take Baumgardner and Jenson back to Mombasa, get hold of Solomon and the Arab, which could easily be done, and set the whole group breaking stone with the possible exception of the boatswain, who had been a mere tool in Jenson's hands.

Moreover, the pallid-faced secretary was turning out to be a dangerous character. The American's dislike of him was being well verified, and he would have to keep a good watch on the viperish little black-clad man on the trip to Melindi, where the district commissioner could take him in charge.

But while he was turning the matter over in his mind, Baumgardner, perhaps suspecting that the American had bluffed the truth out of him, was regaining his lost self-control, and now spoke out with startling boldness.