By this time it was nearly pitch dark, but of course, this would make no difference while flying through steam clouds, for visibility under such circumstances would be impossible even in daylight. If he only had some covering for the cockpit to keep out the steam, he could fly just as well at night as by day, except for one danger; how could he be warned of flying too high, passing through the circumambient cloud envelope, and being shriveled to a crisp by the close proximity of the sun. In despair the earth-man sat beside his beached airship, as the velvet blackness crept out of the east and enveloped the planet. So near, and yet so far! He had successfully transmitted himself through millions of miles of space from the earth to Poros. He had escaped the clutches of the Formians and the Roies. He had built a complete radio set out of nothing, and had talked with Cupia across the boiling seas. He had traversed those seas once without accident. He had eluded the machinations of the Whoomangs, with their moth grub “souls”. And yet here he was, with only a few miles of ocean separating him from his loved ones, and, nevertheless, blocked effectually by the lack of a few yards of cloth. What fate! As the last purple flush died on the western horizon, Myles suddenly jumped to his feet, and laughed aloud. The solution was so obvious that it had completely escaped him until now. It was the setting sun that had suggested the escape from his dilemma. There is no sun at night! Of course not! Therefore why not soar straight up, pierce the cloud envelope and fly above it to Cupia, letting the clouds protect him from the heat of the boiling seas, as they normally protect the planet from the light and heat of the sun? At any rate, it was worth trying. To remain where he was would mean either eventual starvation, or recapture by the terrible Whoomangs. So, by the light of his little Vairking stone lamp, he made a hasty lunch from his few remaining provisions, and then took his stand at the levers for a new experiment in Porovian navigation. Up, up, he shot through the dense blackness, up to a height which in earth would have filled his blood with air bubbles, and have suffocated his lungs. But on Poros, with its thicker atmospheric shell and its lesser gravity, the change was not so evident. Far to the eastward he saw the lights of Yat, the city of the beasts; but this was his only landmark. There was nothing but his gyro-compass to tell him exactly which was north, and south, and east, and west; nothing but his clinometer to indicate whether he was going up or down; nothing but his altimeter to indicate his approximate height above the surface of the planet. And these instruments he must read by the flickering light of a primitive open wick stone lamp on the floor of the cockpit. What if this faint illuminator should become extinguished? He certainly could not leave the controls for long enough to use flint and steel to rekindle it.