A rough but good-natured lot of men. Jolly and raucous by nature in their leisure hours. But there was too much leisure here now. Their mirth had a hollow sound. In older times, explorers of the frozen Polar zones had to cope with inactivity, loneliness and despair. But at least they were on their native world. The grimness of the Moon was eating into the courage of Grantline's men. An unreality here. A weirdness. These fantastic crags. The deadly silence. The nights, almost two weeks of Earth time in length, congealed by the deadly frigidity of space. The days of black sky, blazing stars and flaming Sun, with no atmosphere to diffuse the Sun's heat radiating so swiftly from the naked Lunar surface that the outer temperature still was cold. And day and night, always the beloved Earth disc hanging poised up near the zenith. From thinnest crescent to full Earth, then back to crescent.

All so abnormal, irrational, disturbing to human senses.

With the mining work over, an irritability grew upon Grantline's men. And perhaps since the human mind is so wonderful, elusive a thing, there lay upon these men an indefinable sense of disaster. Johnny Grantline felt it. He thought about it now as he sat in the room corner watching Wilks being forced into the plaget game, and he found the premonition strong within him. Unreasonably, ominous depression! Barring the accident which had disabled his little spaceship when they reached this small crater hole, his expedition had gone well. His instruments, and the information he had from the former explorers, had enabled him to pick up the catalyst vein with only one month of search.

The vein had now been exhausted; but the treasure was here—enough to supply every need on his Earth! Nothing was left but to wait for the Planetara. The men were talking of that now.

"She ought to be well midway from Ferrok-Shahn by now. When do you figure she'll be back here and signal us?"

"Twenty days. Give her another five now to Mars, and five in port. That's ten. We'll pick her signals in three weeks, mark me!"

"Three weeks. Just give me three weeks of reasonable sunrise and sunset! This cursed Moon! You mean, Williams, next daylight."

"Ha! He's inventing a Lunar language. You'll be a Moon man yet."

Olaf Swenson, the big blond fellow from the Scandia fiords, came and flung himself down beside Grantline.

"Ay tank they bane without enough to do, Commander ——"