"How did you expect to rescue David with only a dozen men?" asked Tanar.

"We are not all here," said Tarzan. "We became separated from our companions and have been unable to find them. However, there were not very many men in our expedition. We depended upon other means than manpower to effect the rescue of your Emperor."

At this moment a great cry arose from one of the ships. The excitement rose and spread. The warriors were all looking into the air and pointing. Already some of them were elevating the muzzles of their cannons and all were preparing their rifles, and as Tarzan and Jason looked up they saw the O-220 far above them.

The dirigible had evidently discovered the fleet and was descending toward it in a wide spiral.

"Now I know someone was born on Sunday," said Jason. "That is our ship. Those are our friends," he added, turning to Ja.

All that transpired on board the flagship passed quickly from ship to ship until every member of the armada knew that the great thing hovering above them was no gigantic flying reptile, but a ship of the air in which were friends of Abner Perry and their beloved Emperor, David I.

Slowly the great ship settled toward the surface of the sea and as it did so Jason Gridley borrowed a spear from one of the warriors and tied Lajo's head handkerchief to its tip. With this improvised flag he signalled, "O-220 ahoy! This is the war fleet of David I, Emperor of Pellucidar, commanded by Ja of Anoroc; Lord Greystoke, ten Waziri and Jason Gridley aboard."

A moment later a gun boomed from the rear turret of the O-220, marking the beginning of the first international salute of twenty-one guns that had ever reverberated beneath the eternal sun of Pellucidar, and when the significance of it was explained to Ja he returned the salute with the bow gun of his flagship.

The dirigible dropped lower until it was within speaking distance of the flagship.

"Are you all well aboard?" asked Tarzan.