But there was no time to ask. With so many of the ants killed, all their aircraft disabled and the Vairkings firmly entrenched in the palace and supplied with at least six ant-rifles, Quivven’s people were in as good a position as possible.

For Cabot to stop now might mean not only renewed complications with the golden maid, but also possibly the confiscation of his plane by Jud. It would not pay to take any chances; he must hasten home to Lilla, leaving the ants, the Roies, and the Vairkings to contend for the possession of the burning city.

As he turned the nose of the airship upward and began the ascent preparatory to flying across the western mountains to the sea, he observed a large marching body of troops far to the south. These might change his responsibility with respect to his late hosts; it would only take a few minutes to investigate; so southward he turned the plane.

The marching troops were Roies, as he judged by their absence of leather armor. Swooping low he picked out the face of their leader. It was Otto the Bold, son of Grod the Silent, the leader of the friendly faction of the furry wild-men of the hills. Having captured and sacked the city of the ants, they were now evidently on their way to relieve Vairkingi.

The last feeling of obligation passed from the earth-man, as, waving to his savage friend, he turned the nose of his plane upward once more. Then it occurred to him that, having flown so far south, he might just as well take a final look at the ant-city. Besides, this would place him in exactly the location where the ant-men had landed when they flew east across the boiling seas from Cupia to found New Formia, and thus would be a good point for him to take off in his flight westward.

Accordingly, he turned to the right until he topped the mountain range, then turned to the left again, and followed the range southward.

But a tropical thunderstorm forced him to descend in a cleft of hills. Myles hoped that this rain extended to Vairkingi, and would serve to quench its fires.

After several hours, the weather cleared once more. The two companions compared notes on the adventures which had befallen them since their first hop-off that morning. Then they embarked once more, and continued their course southward. Soon they passed over the smoking ruins of the once-impregnable Sur, and at last came to the little radio hut of the Formians.

This, too, was in ruins; Otto had received his note. Wireless communication between Cupia, and Vairkingia and New Formia was at an end. Yuri would now believe the worst that Cabot had told him over the air. And that worst was likely to prove to be the truth after all.

Swinging to the westward, Myles passed over the deserted city of the ants, patrolled by a handful of Otto’s Roies; and thence on and on until there loomed before him a solid wall of steam. It was the boiling sea, over which he must pass in order to rejoin his loved ones.