“Ai! ai! ai!” howled Simban, cowering amid his saddle-bags. “I knew well that some devilry would overtake us.”

At the same moment the two asses began to bray loudly, and the horses, with a frantic neighing and squealing, trembled beneath their riders. Only with much cruel spurring could Zobal force his stallion forward beside Cushara’s mare.

“Mayhap it is only some pestilential mist,” said Cushara.

“Never have I seen such mist,” replied Zobal doubtfully. “And there are no vapors to be met with in Izdrel. Methinks it is like the smoke of the seven hells that men fable beneath Zothique.”

“Shall we ride forward?” said Cushara. “I would learn whether or not a pike can penetrate that darkness.”

Calling out some words of reassurance to Rubalsa, the twain sought to spur their mounts toward the murky wall. But, after a few swerving paces, the mare and the stallion balked wildly, sweating and snorting, and would go no farther. Cushara and Zobal dismounted and continued their advance on foot.

Not knowing the source or nature of the phenomenon with which they had to deal, the two approached it warily. Zobal nocked an arrow to his string, and Cushara held the great bronze-headed pike before him as if charging an embattled foe. Both were more and more puzzled by the murkiness, which did not recede before them in the fashion of fog, but maintained its opacity when they were close upon it.

Cushara was about to thrust his weapon into the wall. Then, without the least prelude, there arose in the darkness, seemingly just before him, a horrible multitudinous clamor as of drums, trumpets, cymbals, jangling armor, jarring voices, and mailed feet that tramped to and fro on the stony ground with a mighty clangor. As Cushara and Zobal drew back in amazement, the clamor swelled and spread, till it filled with a babel of warlike noises the whole circle of mysterious night that hemmed in the travellers.

“Verily, we are sore beset,” shouted Cushara to his comrade as they went back to their horses. “It would seem that some king of the north has sent his myrmidons into Yoros.”

“Yea,” said Zobal…. “But it is strange that we saw them not ere the darkness came. And the darkness, surely, is no natural thing.”

Before Cushara could make any rejoinder, the martial clashings and shoutings ceased abruptly. All about it seemed that there was a rattling of innumerable sistra, a hissing of countless huge serpents, a raucous hooting of ill-omened birds that had foregathered by thousands. To these indescribably hideous sounds, the horses now added a continual screaming, and the asses a more frenzied braying, above which the outcries of Rubalsa and Simban were scarce audible.

Cushara and Zobal sought vainly to pacify their mounts and comfort the madly frightened girl. It was plain that no army of mortal men had beleaguered them: for the noises still changed from instant to instant, and they heard a most evil howling, and a roaring as of hell-born beasts that deafened them with its volume.

Naught, however, was visible in the gloom, whose circle now began to move swiftly, without widening or contracting. To maintain their position in its center, the warriors and their charges were compelled to leave the path and to flee northwardly amid the harsh ridges and hollows. All around them the baleful noises continued, keeping, as it seemed, the same interval of distance.

The sun, slanting westward, no longer shone into that eerily moving pit, and a deep twilight enveloped the wanderers. Zobal and Cushara rode as closely beside Rubalsa as the rough ground permitted, straining their eyes constantly for any visible sign of the cohorts that seemed to encompass them. Both were filled with the darkest misgivings, for it had become all too manifest that supernatural powers were driving them astray in the untracked desert.

Moment by moment the gross darkness seemed to close in; and there was a palpable eddying and seething as of monstrous forms behind its curtain. The horses stumbled over boulders and out-croppings of ore-sharp stone, and the grievously burdened asses were compelled to put forth an unheard-of speed to keep pace with the ever-shifting circle that menaced them with its horrid clamor. Rubalsa had ceased her outcries, as if overcome by exhaustion or resignation to the horror of her plight; and the shrill screeches of the eunuch had subsided into a fearful wheezing and gasping.

Ever and anon, it seemed that great fiery eyes glared out of the gloom, floating close to earth or moving aloft at a gigantic height. Zobal began to shoot his enchanted arrows at these appearances, and the speeding of each bolt was hailed by an appalling outburst of Satanic laughters and ululations.

In such wise they went on, losing all measure of time and sense of orientation. The animals were galled and footsore. Simban was nigh dead from fright and fatigue; Rubalsa drooped in her saddle; and the warriors, awed and baffled by the predicament in which their weapons appeared useless, began to flag with a dull weariness.

“Never again shall I doubt the legendry of Izdrel,” said Cushara gloomily.

“It is in my mind that we have not long either to doubt or believe,” rejoined Zobal.

To add to their distress, the terrain grew rougher and steeper, and they climbed acclivitous hillsides and went down endlessly into drear valleys. Anon they came to a flat, open, pebbly space. There, all at once, it seemed that the pandemonium of evil noises drew back on every hand, receding and fading into faint, dubious whispers that died at a vast remove. Simultaneously, the circling night thinned out, and a few stars shone in the welkin, and the sharp-spined hills of the desert loomed starkly against a vermilion afterglow. The travellers paused and peered wonderingly at each other in a gloom that was no more than that of natural twilight.

“What new devilry is this?” asked Cushara, hardly daring to believe that the hellish leaguers had vanished.

“I know not,” said the archer, who was staring into the dusk. “But here, mayhap, is one of the devils.”

The others now saw that a muffled figure was approaching them, bearing a lit lantern made of some kind of translucent horn. At some distance behind the figure, lights appeared suddenly in a square dark mass which none of the party had discerned before. This mass was evidently a large building with many windows.

The figure, drawing near, was revealed by the dim yellowish lantern as a black man of immense girth and tallness, garbed in a voluminous robe of saffron such as was worn by certain monkish orders, and crowned with the two-horned purple hat of an abbot. He was indeed a singular and unlooked-for apparition: for if any monasteries existed amid the barren reaches of Izdrel, they were hidden and unknown to the world. Zobal, however, searching his memory, recalled a vague tradition he had once heard concerning a chapter of negro monks who had flourished in Yoros many centuries ago. The chapter had long been extinct, and the very site of its monastery was forgotten. Nowadays there were few blacks anywhere in the kingdom, other than those who did duty as eunuchs guarding the seraglios of nobles and rich merchants.

The animals began to display a certain uneasiness at the stranger’s approach.

“Who art thou?” challenged Cushara, his fingers tightening on the haft of his weapon.

The black man grinned capaciously, showing great rows of discolored teeth whose incisors were like those of a wild dog. His enormous unctuous jowls were creased by the grin into folds of amazing number and volume; and his eyes, deeply slanted and close together, seemed to wink perpetually in pouches that shook like ebon jellies. His nostrils flared prodigiously; his purple, blubbery lips drooled and quivered, and he licked them with a fat, red, salacious tongue before replying to Cushara’s question.