"You are indeed of another world," he said, a touch of awe in his voice. "With the skin of a thern, the black hair of a First Born and the muscles of a dozen Dators it was no disgrace even for Xodar to acknowledge your supremacy.
A thing he could never do were you a Barsoomian," he added.
"You are travelling several laps ahead of me, my friend,"
I interrupted. "I glean that your name is Xodar, but whom, pray, are the First Born, and what a Dator, and why, if you were conquered by a Barsoomian, could you not acknowledge it?"
"The First Born of Barsoom," he explained, "are the race of black men of which I am a Dator, or, as the lesser Barsoomians would say, Prince. My race is the oldest on the planet. We trace our lineage, unbroken, direct to the Tree of Life which flourished in the centre of the Valley Dor twenty-three million years ago.