It was the work of a moment for Nelson to wrench his reptile around, for already Alden and the Atlantean cavalrymen were speeding across the wide paved court, their lance pennons fluttering bravely in the orange-hued glare.

At top speed the rescuers dashed for a great, oval gateway while the podokos increased their gait; like aero-planes gathering speed, the faster the weird creatures traveled, the higher arose their tails.

Then, following the frightened, backward glances of the hard-riding, red-haired lancers, Nelson suddenly discovered a new and terrible cause for this headlong flight, for, issuing from an unbarred gateway, came perhaps a dozen of _the terrible and enormous allosauri_, which, spying the fleeing cavalry, instantly gave chase.

With a sense of despair, the aviators heard the ferocious bellows booming from behind and watched the appallingly swift progress of those uncouth monsters as, leaping high into the air, the allosauri covered between fifty and sixty feet at a single bound.

"They'll get you," cried an inner voice in Nelson's being. "They'll catch you sure." But the small and lithe podokos, sensing death leaping up from the rear, stretched out their slender, snake-like heads, stood on tiptoe, and, pressing their small forelegs tight against their chests, commenced to run far faster than any horse could gallop. Nevertheless, the allosauri came bounding up like colossal kangaroos, uttering weird, screaming roars that brought a chill of imminent death to the fugitives.

Casting a quick glance over his shoulder, Nelson's blood froze to find an allosaurus not more than seventy yards behind, and making terrible exertions to close that slender gap! Nearer and nearer coursed the incredible monster, body rocking in its terrific stride, dreadful jaws wide apart--jaws that could, without an effort, cut a horse in half.

A fear such as he had never known racked Nelson's consciousness as he found he was hindermost of the cavalcade, which was strung out like a field of racers. The other riders crouched low in their saddles like jockeys, lances held straight out before them, and furiously goaded their strange mounts with curious hooks. Nelson was vastly relieved to get a glimpse of Alden far in the lead, almost beside the Atlantean Prince. His podoko was evidently better than the average.

Faster and faster pursuers and pursued raced across level meadows, over straight, white roads and rolling grain fields. Wind whistled madly in Nelson's ears, filled his eyes with tears, and made his short, dark hair snap, but two huge allosauri were now not twenty yards behind and _gaining with appalling speed!_

On the verge of madness, Nelson hammered his heels into the podoko's scaly side and wished he dared let go the saddle horn to draw his pistol, but to loose his grip was to risk falling off.

Closer and closer! Two enormous nightmarish heads were actually snapping at the fleeing podoko's tail. Then fear must have inspired the reptile Nelson bestrode, for it put on a sudden desperate burst of speed which carried it past the next two lancers. In pa.s.sing he glimpsed the doomed wretches, pale-faced and horrified, as they frantically goaded their failing podokos.

A moment later, piercing screams from just behind a.s.sailed Nelson's ears, but when he looked to the rear once more it was to find that a wide gap had opened between him and the great monsters behind.

Evidently, the heavy-built allosauri were unable to long maintain the terrific pace set by the smaller and more agile podokos whose maximum speed Nelson judged to be well over sixty miles an hour.

The pilot's eyes narrowed on beholding, in clear relief and not far away, the majestic, whitish outline of mighty Heliopolis, whose lofty towers, graceful domes and frowning citadels shone pink under the leaping, blinding glare on Mount Pelion.

"We certainly picked a nice time to drop in on this G.o.d-forsaken country," grunted Alden as the walls of Heliopolis loomed near. "We seem to have crashed into the busiest days they've had in centuries.

How many shots you got?"

Nelson, swaying to the steady trot of his podoko, hesitated.

"Only five. d.a.m.ned if I know what's going to happen next. I suppose it all depends on Hero Giles. Looks as though the n.o.bles were bent on restoring Altorius--if he's not dead by now."

Alden tugged powerfully at the strange bridle which controlled his beast. "The priests wouldn't dare kill him, but it surely looks like their rebellion has gained a lot of headway."

A moment Alden's clear, blue eyes swept the towering battlements, gorgeously-sculptured temples and curious stepped pyramids, which now loomed near at hand and cast their rugged outlines sharp against the copper-colored heavens.

"Maybe there's some way we can work this revolution trouble to help us," suggested Nelson, without enthusiasm. "If we could play off one crowd against the other--"

His remarks were cut short as the foremost lancers slowed before an enormous bronze gate looming ahead. On the vast main panel was a beautifully-wrought dolphin curling about a trident--symbol of the imperial power now so sorely tried. Beyond that gate, breathlessly mused Nelson, lay Heliopolis and an unknown fate.

CHAPTER IX

It would have taken no trained eye to observe that something very unusual had happened in Atlans. Some of Heliopolis' many wide streets were quite deserted save for several small, bright-red cat-like reptiles that the Atlanteans sheltered as pets, but in other thoroughfares large throngs of people milled uneasily about, while listening to the impa.s.sioned harangue of black-robed priests.

Everywhere business was at a standstill, shops were closed and markets tenantless.

Riding at an easy hopping gallop, the aviators urged their green, scaly mounts to the side of Hero Giles, for here and there some wandering citizens, spying the Americans, would yell shrill curses and shake their fists. Reining in, Nelson demanded to know the reason for this unaccountable hostility.

"'Tis the work of our gentle and holy priests," explained Hero Giles with a hard laugh. "They have told the populace ye are magicians seeking to set other G.o.ds above Poseidon."

"Nonsense," rapped the American, looking about uneasily. "We've never given two thin d.a.m.ns about anything except getting back to our plane."

"So I know," was the Atlantean's preoccupied reply; "but this sp.a.w.n of Herakles' temples speak loud, and the loutish populace hearkens to their lies!"

"But what the devil is all this revolt about?" broke in Alden. "Why were we arrested? You started to tell us at the prison."

Hero Giles frowned as he pulled his podoko into a gracefully carved gateway of green marble. "There's but little to add, for 'tis all very simple. The priests have laid impious hands on His Splendor, Altorius, and imprisoned him in the great temple of Poseidon. We n.o.bles have defied the arch-priest, for the dog-conceived Jereboam already marshals his forces for a fresh attack, knowing that Atlans is sore beset by internal strife. Have patience for now we go to the council chamber, where ye shall hear everything."

To say that the newcomers found the council of n.o.bles in a furore would be to put it mildly. Their angry voices carried far down the beautifully ornamented corridors of the Imperial Palace, which was used as headquarters.

"Sounds like a dog-fight going on in there," muttered Alden anxiously.

"Don't like the sound of it a bit. I hope they feel kindly towards us."

Nelson, swinging along with his ragged shirt fluttering like a scarecrow's, nodded. "Yes, so do I. But I guess they need our help or Hero Giles wouldn't have risked his life to save us."

Conscious of the value of appearances, the dark-haired aviator unconsciously straightened his frayed black tie, b.u.t.toned the sleeves of his khaki flannel shirt and otherwise made pathetic attempts at improving his appearance as the clamor of wrangling voices grew loud down the corridor.

His wide shoulders swinging to his stride, Hero Giles flung open a door, beautifully wrought with leaping podokos, and halted on the threshold.

"Death!" rumbled a voice from inside. "I say death to the Wanderers!

Let us make our peace with the priests, lest they slay His Splendor forthwith."

"And that's what I call a nice friendly greeting," was Alden's murmured comment. "Better get your gat handy, Vic. I'll bet they've got a reception committee of retortii men behind the door."

There was no time for Nelson to reply because now the threshold was at hand. Inside, seated at a table, he had an impression of perhaps ten or fifteen scarred and angry-looking veteran n.o.bles whose green cloaks and bejeweled armor revealed their high rank.

In mid-dispute they halted, eyeing the three figures in the doorway with curiously conflicting expressions. Some smiled a relieved welcome, some stared in surprise, but not a few greeted the Americans with lowering brows and angry, threatening eyes.

"Harken," Hero Giles greeted them. "By Poseidon's grace the Wanderers were saved from a vile death. Rise Heroes, and bid them welcome!"

"Ah, the Wanderers!" In an instant Hero John was wringing Nelson's hand. "Oh blessed hour! I had feared for ye both. Welcome, Hero Alden!"

A faint flush crept over the young man's wan and trouble-lined face.

"'Tis well ye've come," he whispered. "The council was prepared to change their intent towards ye."

A grizzled, one-eyed prince arose, and leveling an accusing forefinger at Nelson shouted, "'Tis he hath caused the rebellion. Slay him!"

"Nay!" thundered the Hero Giles, "and forget not, Hero Paul--_I_ am senior Prince of Atlans!"

In the great white marble council chamber silence fell, while from wonderfully carved ivory and gold chairs the hara.s.sed, yellow-bearded princes regarded the two uneasy Americans.