"Oh yes, sir," he answered; "'Tetarta' means 'the fourth world,' and thus indicates our position in the solar system. Sometimes, however, the name 'Tetartœcumene' is used; but this does not find general acceptance amongst us, as it means 'the fourth inhabited world,' and therefore assumes rather too much.
"We know the earth is inhabited, and have some reason to believe that Venus is also; but with regard to Mercury we have no knowledge at all upon this point. Mercury, as seen from Mars, is always too close to the sun for us to learn much about it by optical investigation; and we have never been certain that we have either received influences from there or been able to transmit influences to the planet."
"Thank you, Merna," I replied, "that clears up the matter; and it seems to me that your names are much more appropriate than the one by which your world is known to us on the earth; for, on account of its red colour, we have, as you are aware, named it 'Mars,' after our mythical god of war. I gather from what you have told us that war is now quite unknown upon your planet, so our name is quite inappropriate."
"Yes, that is so, sir," he answered; "and, later on, I hope you will learn much more concerning our social conditions, and that you will find we are a fairly developed and civilised people."
He then took leave of us, promising to see us again in the morning for the purpose of showing us about our new world.
It was now rather late, so, after discussing for a while the events of this most exciting day, we retired to rest. My thoughts, however, were so many and so tumultuous that it is scarcely a matter of wonder that a very long time elapsed before sleep came to me.