One curious fact I discovered as I watched his thoughts was that the outer doors are manipulated by telepathic means. The locks are so finely adjusted that the doors are released by the action of a certain combination of thought waves. To experiment with my newfound toy I thought to surprise him into revealing this combination and so I asked him in a casual manner how he had managed to unlock the massive doors for me from the inner chambers of the building. As quick as a flash there leaped to his mind nine Martian sounds, but as quickly faded as he answered that this was a secret he must not divulge.

From then on his manner toward me changed as though he feared that he had been surprised into divulging his great secret, and I read suspicion and fear in his looks and thoughts, though his words were still fair.

Before I retired for the night he promised to give me a letter to a nearby agricultural officer who would help me on my way to Zodanga, which he said, was the nearest Martian city.