So having decided at last that this deep valley must remain their home forever, Omega looked about for a suitable building site, for although the ship was safe and comfortable they longed for a home on the earth. But the ever present menace of the sea-monster saddened them and filled them with misgivings, despite the fact that Omega could guard the cottage electrically. But Omega wondered whether electric safeguards would keep this creature from coming some night to the cottage and sticking his loathsome head in at door or window. Omega shuddered at the thought, but refrained from mentioning such a possibility to Thalma. Having selected a site under the branches of a great coral tree standing within the shade of an overhanging rock, Omega erected a cottage. It took him but a few days to build and furnish this building from supplies on the ship. It was complete in every feature, even to running water from the lake. Grass was brought from the lake and a lawn laid out about the cottage in the shadows of the rock. The grass was kept watered for Thalma's sake, even though the water was needed for other purposes and the lake was diminishing steadily. But she was sacred in his eyes--she the last mother the old earth ever was to know. The interior of the cottage was embellished like a palace, for treasures were brought from the airship to grace its walls. The richest rugs, curtains, tapestries and silks the world had ever known were there for Thalma's pleasure and comfort. Paintings of green verdure, of forests and plains of waving grass, of tumbling mountain streams and cool, placid lakes, Omega drew from the young days of the earth. The power to portray nature's moods and beauties had increased in many men with the passing of time. He placed these scenes before Thalma's couch that their cool and inspiring presence might comfort her while she awaited the coming of the child. * * * * * One morning being weary of the stark monotony of the valley, whose eastern wall was distant many miles, Omega and Thalma determined to scale the heights above. For sometimes in the sinister aspect of the chasm's walls, it seemed that the rocks would close together and crush out their lives. They concluded not to take the air-car, but to go on a rambling picnic with the ever present hope that they might discover another oasis of life. Hand in hand they rose into the air, up and up for miles past frowning cliffs and dark caverns, yawning like grinning skulls above the outposts of death. There was no visible effort in their flight. They but took advantage of nature's laws which man had long understood. At last on the highest peak they paused to rest on a dust-covered rock.