Chessman said, "The central square? It seems to be their market, by the number of people."

"I suppose so," Plekhanov grunted. "Right there before the largest pyramid. We'll remain inside the craft for the rest of today and tonight."

Natt Roberts, who had put away his camera, said, "But why? It's crowded in here."

"Because I said so," Plekhanov rumbled. "This first impression is important. Our flying machine is undoubtedly the first they've seen. We've got to give them time to assimilate the idea and then get together a welcoming committee. We'll want the top men, right from the beginning."

"The equivalent of the Emperor Montezuma meeting Cortez, eh?" Barry Watson said. "A real red carpet welcome."

The Pedagogue's space lighter settled to the plaza gently, some fifty yards from the ornately decorated pyramid which stretched up several hundred feet and was topped by a small templelike building.

Chessman stretched and stood up from the controls. "Your anthropology ought to be better than that, Barry," he said. "There was no Emperor Montezuma and no Aztec Empire, except in the minds of the Spanish." He peered out one of the heavy ports. "And by the looks of this town we'll find an almost duplicate of Aztec society. I don't believe they've even got the wheel."

The eight of them clustered about the craft's portholes, taking in the primitive city that surrounded them. The square had emptied at their approach, and now the several thousand citizens that had filled it were peering fearfully from street entrances and alleyways.

Cogswell, a fiery little technician, said, "Look at them! It'll take hours before they drum up enough courage to come any closer. You were right, doctor. If we left the boat now, we'd make fools of ourselves trying to coax them near enough to talk."

Watson said to Joe Chessman "What do you mean, no Emperor Montezuma?"