These men were from strange cities commonly enemies of Helium, yet because we had endured danger together I felt a definite friendly attachment toward them; and I did not doubt but that they were inclined similarly toward John Carter and me. I wondered if we should ever meet again.

They led us down this new corridor and across a great courtyard into another building, above the entrance to which were hieroglyphics strange to me. No two nations of Barsoom have the same written language, although there is a common scientific language understood by the savants of all nations; yet there is but one spoken language upon Barsoom, which all peoples use and understand, even the savage green men of the dead sea bottom. But John Carter is very learned and reads many languages. He told me that the hieroglyphics read Laboratory Building.

We were taken into a medium size audience chamber where an officer told us to wait and that he would fetch Ras Thavas, that we might meet the man we were to help guard and watch. He also told us that Ras Thavas was to be treated with respect and consideration as long as he made no effort to escape. He had the freedom of the laboratory and was, in a sense, all powerful there. If he called on us to help him in his work, we were to do so. It was evident that the Council of the Seven Jeds looked with awe upon him although he was their prisoner, and that they had sense enough to make life as easy for him as possible. I was very anxious to see Ras Thavas, of whom I had heard. He was called The Master Mind of Mars, and although he had often turned his remarkable talents to nefarious schemes, he was nevertheless admired because of his great learning and skill. He was known to be over a thousand years old; and because of this fact alone I would have been curious to see him, as the span of life upon Barsoom is seldom so great. A thousand years is supposed to be the limit, but because of our warlike natures and the prevalency of assassination few attain it. He must, indeed, have been a withered little mummy of a man, I thought; and I wondered that he had the strength to carry on the enormous work in which he was engaged.

We had waited but a short time when the officer returned accompanied by an extremely handsome young man who looked at us with a haughty and supercilious air, as though we had been the dregs of humanity and he a god.

"Two more spies to watch me," he sneered.

"Two more fighting men to protect you, Ras Thavas," corrected the officer who had brought us here from the other building.

So this was Ras Thavas! I could not believe my eyes. This was a young man, unquestionably; for while it is true that we Martians show few traces of advancing years until almost the end of our allotted span, at which time decay is rapid, yet there are certain indications of youth that are obvious.

Ras Thavas continued to scrutinize us. I saw his brows contract in thought as his eyes held steadily on John Carter as though he were trying to recall a half remembered face. Yet I knew that these two men had never met. What was in the mind of Ras Thavas?

"How do I know," he suddenly snapped, "that they have not wormed their way into Morbus to assassinate me? How do I know that they are not from Toonol or Phundahl?"

"They are from Helium," replied the officer. I saw Ras Thavas's brow clear as though he had suddenly arrived at the solution of a problem. "They are two panthans whom we found on their way to Phundahl seeking service," concluded the officer.

Ras Thavas nodded. "I shall use them to assist me in the laboratory," he said.

The officer looked surprised. "Had they not better serve in the guard for a while?" he suggested, "That will give you time to have them watched and to determine if it would be safe to have them possibly alone with you in the laboratory."

"I know what I am doing," snapped Ras Thavas. "I don't need the assistance of any fifth-rate brain to decide what is best for me. But perhaps I honor you."

The officer flushed. "My orders were simply to turn these men over to you. How you use them is none of my concern. I merely wished to safeguard you."

"Then carry out your orders and mind your own business. I can take care of myself." His tone was as disagreeable as his words. I had a premonition that he was not going to be a very pleasant person with whom to work.

The officer shrugged, gave a command to the hormad warriors that had accompanied us, and marched them from the audience chamber. Ras Thavas nodded to us.