roying
the Ogrum, if he could. The only problem was how! He had not enough men
and not enough strength to meet them in open battle. Yet they had to be
destroyed.

"Return to others," he told Guru.

The dawn man returned by a different route, passing through the other
edge of the city of the Ogrum. Here they found a heavy stone wall, like
the retaining dike of a river.

"Why wall, Guru?" Craig questioned.

"Keep earth-shakers out of Ogrum squatting place," the dawn man
answered. "Earth-shakers" was Guru's name for the dinosaurs and
"squatting place" was his word for city. Beyond the wall was the vast
swamp. The Ogrum had erected the wall to keep the dinosaurs out of their
city.

"Well, I'm damned," said Craig thoughtfully. "I wonder. Hurry, Guru.
Must get back before sun rise."

At a swift trot, the dawn man led him up the mountain.

* * * * *

"This is what we're going to do," Craig said excitedly to Michaelson.
The sailors, listening closely, squatted around him in the darkness.
Dawn was not far off. Already the sky in the east was beginning to turn
gray.

Swiftly he outlined his plan of attack, submitted it to the scientist.
"I am no military strategist," Michaelson said slowly. "I am not
competent to criticize your suggestions."

"I am," a voice spoke. "I've studied military strategy. Your plan hasn't
got a chance in a thousand to succeed. You are just getting us all
killed for nothing."

It was Voronoff who spoke.

"That may be true," Craig admitted. "If you have a better plan, I'm
willing to listen."

"I've told you all along the only thing to do is to clear out of here as
fast as we can."

"That is the one thing we're not going to do," Craig said icily. "If you
have nothing constructive to offer, keep your damned mouth shut."

Voronoff sullenly walked away.

Craig selected a group to charge the hangar where the planes were kept,
a second group to provide a diversionary attack across the city, and a
third group to hit the temple and release the prisoners. The attack was
to start just after darkness fell the next night. At that time, so Guru
said, all the Ogrum would be gathered in the temple to watch the
sacrifice.

"And after that," Michaelson said slowly. "What is to happen?"

"Ah," said Craig. "There is the heart of the affair. What happens next
will determine whether any of us ever get out of here alive. And," he
looked steadily at the scientist, "that is