 After their defeat by Cupia, what do the remaining Formians travel through during their escape? What is on the other side and what do the Formians do to it?
The university authorities will express no opinion as to whether or not these messages come from Mars. 6 Twelve months ago he would have been available, for he was then quietly visiting at my farm, after five earth-years spent on the planet Venus, where, by the aid of radio, he had led the Cupians to victory over their oppressors, a human-brained race of gigantic black ants. He had driven the last ant from the face of continental Poros, and had won and wed the Princess Lilla, who had borne him a son to occupy the throne of Cupia. The last of the ant-men and their ally, the renegade Cupian Prince Yuri, had presumably perished in an attempt to escape by flying through the steam-clouds which completely hem in continental Poros. As he stood thus expectant, Myles realized that his present position and condition, the surrounding scenery, and the advance of the ant-men were exactly, item for item, like the opening events of his first arrival on the planet Poros. Could it be that all his adventures in Cupia had been naught but a dream; a recurring dream, in fact? And then events began to differ from those of the past; for the three other Formians halted, and Doggo advanced alone. The other three ants kept away from him as Doggo led him to the beached airplane, and soon they were scudding along beneath silver skies, northward as it later turned out. He was home once more, back again upon the planet which held all that was dear to him in two worlds. What mattered it that he was now a prisoner, in the hands (or, rather, claws) of his old enemies, the Formians? How eager he was to reach her side, and save her from that peril, whatever it was, which had caused her to flash that “S O S” a hundred million miles across the solar system from Poros to the earth. He wondered what could have happened in Cupia since his departure, only a few sangths ago. In either event, how had they been able to reconquer Cupia? These and a hundred other similar questions flooded in upon the earth-man, as the Formian airship carried him, a captive, through the skies. What uninhabited portion of Cupia could this be, over which they were now passing? Apparently a few survivors of the accursed race of Formians were consolidating their position and attempting to build up a new empire in some out-of-the-way portion of the continent.
 Steam clouds over boiling seas. On the other side they find a new continent, which they dub New Formia.
 Steam clouds over bloody seas. On the other side they find a new continent, which they use as fodder for military and industrial growth.  Poison clouds over magma seas. On the other side they find Myles Cabot, ship wrecked on an island. They use Cabot’s knowledge to get revenge on the Cupians.  Steam clouds over boiling seas. On the other side they find a new continent, which they dub New Formia.  Steam clouds over bloody seas. On the other side they find a new continent inhabited by a forgotten race of Cupians, whom the Formians enslave in order to take the land as theirs.