But the three days passed and no rescue ship came. The Earth was almost at the full. We tried signaling again. Perhaps it got through—we did not know. But our power was weaker now. The wall of one of the rooms sprang a leak, and the men were hours repairing it. I did not say so, but never once did I feel that our signals were read on Earth. Those cursed clouds! The Earth almost everywhere seemed to have poor visibility.

Four of our eight days of grace were all too soon passed. The brigand ship must be half way here by now.

They were busy days for us. If we could have captured Miko and his band, our danger would have been less imminent. With the treasure insulated, and our camp in darkness, the arriving brigand ship might never find us. But Miko knew our location; he would signal his oncoming ship when it was close and lead it to us.

During those three days—and the days which followed them—Grantline sent out searching parties. But it was unavailing. Miko, Moa and Coniston, with their five underlings, could not be found.

We had at first hoped that the brigands might have perished. But that was soon dispelled! I went—about the third day—with the party that was sent to the Planetara. We wanted to salvage some of its equipment, its unbroken power units. And Snap and I had worked out an idea which we thought might be of service. We needed some of the Planetara's smaller gravity plate sections. Those in Grantline's wrecked little Comet had stood so long that their radiations had gone dead. But the Planetara's were still working.

Our hope that Miko might have perished was dashed. He too had returned to the Planetara! The evidence was clear before us. The vessel was stripped of all its power units save those which were dead and useless. The last of the food and water stores were taken. The weapons in the chart room—the Benson curve lights, projectors and heat rays—had vanished!

Other days passed. Earth reached the full and was waning. The fourteen day Lunar night was in its last half. No rescue ship came from Earth. We had ceased our efforts to signal, for we needed all our power to maintain ourselves. The camp would be in a state of siege before long. That was the best we could hope for. We had a few short-range weapons, such as Bensons, heat-rays and projectors. A few hundred feet of effective range was the most any of them could obtain. The heat-rays—in giant form one of the most deadly weapons on Earth—were only slowly efficacious on the airless Moon. Striking an intensely cold surface, their warming radiations were slow to act. Even in a blasting heat beam a man in his Erentz helmet-suit could withstand the ray for several minutes.

We were, however, well equipped with explosives. Grantline had brought a large supply for his mining operations, and much of it was still unused. We had, also, an ample stock of oxygen fuses, and a variety of oxygen light flares in small, fragile glass globes.

It was to use these explosives against the brigands that Snap and I were working out our scheme with the gravity plates. The brigand ship would come with giant projectors and some thirty men. If we could hold out against them for a time, the fact that the Planetara was missing would bring us help from Earth.

Another day. A tenseness was upon all of us, despite the absorption of our feverish activities. To conserve power, the camp was almost dark, we lived in dim, chill rooms, with just a few weak spots of light outside to mark the watchmen on their rounds. We did not use the telescope, but there was scarcely an hour when one or the other of the men was not sitting on a cross-piece up in the dome of the little instrument room, casting a tense, searching gaze through his glasses into the black, starry firmament. A ship might appear at any time now—a rescue ship from Earth, or the brigands from Mars.