"Zitu!" Robur gasped. "After tomorrow night we must speak of these things to Aphur's king. Jasor, I am minded that Magur is right. Zitu works through you to his ends."

The motor coughed and died, having used up its fuel. Croft smiled, and called Robur back to work. Through the day they toiled, and by night the engine was bolted to the chassis, wheeled into the assembling-room by the workmen that afternoon. There remained now no more than the assembling of the clutch and the transmission before the body should be affixed to complete the car. And the body was ready and waiting to be bolted fast.

Croft worked throughout the night. Robur offered to assist, but he refused. He wanted to be alone—to think—think—plan the future steps of those things he would do inside the coming year. He had sworn to make Aphur strong. And as he assembled the final portions of this first work of his genius, he considered that.

The answer was plain. Aphur must arm—and Nodhur—and Milidhur from whence came the gentle, sweetly sympathetic Gaya, Robur's wife. And of arms he knew little, but—he could learn. Only he had to return to earth. There, not many miles from his own town, was the home of a man who before now had won fame as a maker of arms. Indeed, as Croft knew he had designed weapons afterward adopted by the royal nations of Europe and made by them on a patent lease from this man, Croft's friend.

It would be easy, then, to learn what he desired; to bring back the plans of those self-same weapons and make them here under the patronage of Aphur's king. Then—well—let Zollaria plan and hold what bait she would before Cathur's eyes. Croft chuckled to himself as he worked, and the captain assisting him in Robur's place thought him pleased with their progress and smiled.

"This motur of thine will surely draw the car in lieu of gnuppas, my lord?" he inquired.

"Aye," said Croft with a nod.

"By Zitu! Never was anything like it dreamed of in Tamarizia before thy coming," the captain rumbled in his throat.

Croft nodded again. "Tomorrow I shall bring you orders to start all men working on those parts they have made for this, in untold numbers," he returned. "And hark you, captain. Each man shall make but the one part—which he makes the best. So shall we make many and build them together at once and produce a vast number of cars, and other motors to drive boats on the Na."

"By Zitu! Then shall Aphur rule the seas indeed."