It was six hours before the first of the search parties Lamoureux had sent out returned. The men were soaked, but they had seen no trace of Kalinoff. They had faithfully tried to follow Lamoureux's directions, but in a downpour where it was impossible to see more than fifty feet ahead of them, they stood little chance of rescuing anyone. Most of the six hours had been spent finding their own way home.

The other search parties drifted in slowly, until all had returned. Lamoureux checked them off one by one, and discovered, with practically no surprise, that McCracken was missing.

"Where is the idiot?" he growled.

"McCracken separated from the rest of us," replied Carvalho. "He thought he could catch a glimpse of those mountains Kalinoff described."

"When was this?"

"Just before it started to rain."

"He's probably within a few hundred yards of the ship right now, but can't find us because of this rain. I hope he has sense enough to dig up a white-bush and get some shelter."

"We can never be sure how much sense McCracken has. Anyway, Captain, it can't go on raining like this for very long."

But it could, and it did. The men sat around in the ship, stretching lazily, and took life easy. They had not had time to unpack many of the five hundred pound crates, and what materials were exposed to the rain would not be spoiled. There was no harm in leaving them where they were.

A vacation of this sort would have been welcome, if the trip through space to Mercury had itself not been so largely a vacation. After a day, Lamoureux saw plainly that his men were sick of inactivity. So, for that matter, was he. He had come to take part in a strenuous and dangerous expedition, not to sit on his fanny waiting for the rain to go away.