Supported by scaffolding and occupying nearly the entire length of the enormous chamber, was the strangest looking craft that I have ever seen. The nose was ellipsoidal; and from the greatest diameter of the craft, which was just back of the nose, it sloped gradually to a point at the stem.

"There it is," said Fal Sivas, proudly; "the work of a lifetime, and almost completed."

"An entirely new type of ship," I commented. "In what respect is it superior to present types?"

"It is built to achieve results that no other ship can achieve," replied Fal Sivas. "It is designed to attain speed beyond the wildest imaginings of man. It will travel routes that no man or ship has ever traveled.

"In that craft, Vandor, I can visit Thuria and Cluros. I can travel the far reaches of space to other planets."

"Marvellous," I said.

"But that is not all. You see that it is built for speed. I can assure you that it is built to withstand the most terrific pressure, that it is insulated against the extremes of heat and cold. Perhaps, Vandor, other inventors could have accomplished the same end. In fact, I believe Gar Nal has already done so, but there is only one man upon Barsoom, doubtless there is only one brain in the entire Solar System, that could have done what Fal Sivas has done. I have given that seemingly insensate mechanism a brain with which to think. I have perfected my mechanical brain, Vandor, and with just a little more time, just a few refinements, I can send this ship out alone; and it will go where I wish it to go and come back again.

"Doubtless, you think that impossible. You think Fal Sivas is mad; but look! Watch closely."

He centered his gaze upon the nose of the strange-looking craft, and presently I saw it rise slowly from its scaffolding for about ten feet and hang there poised in mid-air. Then it elevated its nose a few feet, and then its tail, and finally it settled again and rested evenly upon its scaffolding.

I was certainly astonished. Never in all my life had I seen anything so marvellous, nor did I seek to hide my admiration from Fal Sivas.

"You see," he said, "I did not even have to speak to it. The mechanical mind that I have installed in the ship responds to thought waves. I merely have to impart to it the impulse of the thought that I wish it to act upon. The mechanical brain then functions precisely as my brain would, and directs the mechanism that operates the craft precisely as the brain of the pilot would direct his hand to move levers, press buttons, open or close throttles.

"Vandor, it has been a long and terrible battle that I have had to wage to perfect this marvellous mechanism. I have been compelled to do things which would revolt the finer sensibilities of mankind; but I believe that it has all been well worthwhile. I believe that my greatest achievement warrants all that it has cost in lives and suffering.