The door of the car swung wide, and Ortiz's pale grim face peered in behind the blue steel barrel of his automatic. He smiled queerly as Jamison, with a grunt of relief, tapped Bell's wrist in sign to put away his weapon. "Ah, very well," said Ortiz, with the same queer smile upon his face. "One moment." He disappeared. On the instant there was the thunderous crashing of a weapon. Bell started up, but Jamison thrust him back. Then Ortiz appeared again with smoke still trickling from the barrel of his pistol. "I have just done something that I have long wished to do," he observed coolly. "I have killed the chauffeur and his companion. You may alight, now. I believe we will have half an hour or more. It will do excellently." He offered his hand to Paula as she stepped out. She seemed to shudder a little as she took it. "I do not blame you for shuddering, Senorita," he said politely, "but men who are about to die may indulge in petty spites. And the chauffeur was a favorite with the deputy for whom I am substituting. Like all favorites of despots, he had power to abuse, and abused it. I could tell you tales, but refrain." * * * * * The car had come to a stop in what seemed to be a huge warehouse, and by the sound of water round about, it was either near or entirely built out over the harbor. A large section near the outer end was walled off. Boxes, bales, parcels and packages of every sort were heaped all about. Bell saw crated air engines lying in a row against one wall. There were a dozen or more of them. Machinery, huge cases of foodstuffs.... "The Buenos Aires depot," said Ortiz almost gaily. "This was the point of receipt for all the manufactured goods which went to the _fazenda_ of Cuyaba, Senor Bell. Since you destroyed that place, it has not been so much used. However, it will serve excellently as a tomb. There are cases of hand grenades yonder. I advise you to carry a certain number with you. The machine guns for the air-craft, with their ammunition, are here...." He was hurrying them toward the great walled-off space as he talked, his automatic serving as a pointer when he indicated the various objects. "Now, here," he added as he unlocked the door, "is your vessel. The Master bought only amphibian planes of late. Those for Cuyaba were assembled in this little dock and took off from the water. Your destruction up there, Senor Bell, left one quite complete but undelivered. I think another, crated, is still in the warehouse. I have been very busy, but if you can fuel and load it before we are attacked...." They were in a roofed and walled but floorless shed, built into the warehouse itself. Water surged about below them, and on it floated a five passenger plane, fully assembled and apparently ready to fly, but brand new and so far unused. * * * * *