Stephen rode back with his Arab companion, to the desert city where Nevill waited. He had gone to the ZaouÏa alone with the guide, because Nevill had thought it well, in case of emergencies, that he should be able to say: "I have a friend in Oued Tolga who knows where I am, and is expecting me." Now he was coming away, thwarted for the moment, but far from hopeless.

It is a four hours' ride among the dunes, between the ZaouÏa and the town, for the sand is heavy and the distance is about seventeen miles. The red wine of sunset was drained from the cups of the sand-hollows, and the shadows were cool when Stephen saw the minaret of the town mosque and the crown of an old watch-tower, pointing up like a thumb and finger of a buried hand. Soon after, he passed through the belt of black tents which at all seasons encircles Oued Tolga as a girdle encircles the waist of an Ouled NaÏl, and so he rode into the strange city. The houses were crowded together, two with one wall between, like Siamese twins, and they had the pale yellow-brown colour of honeycomb, in the evening light. The roughness of the old, old bricks, made of baked sand, gave an effect of many little cells; so that the honeycomb effect was intensified; and the sand which flowed in small rippling waves round the city, and through streets narrow and broad, was of the same honey-yellow as the houses, except that it glittered with gypsum under the kindling stars. Among the bubbly domes, and low square towers, vague in the dimming light, bunches of palms in hidden gardens nodded over crumbling walls, like dark plumes on the crowns of the dancing-women.

In the market-place was the little hotel, newly built; the only French thing in Oued Tolga, except the military barracks, the Bureau Arabe, and a gurgling artesian well which a French officer had lately completed. But before Stephen could reach the market-place and the hotel, he had to pass through the quarter of the dancing-girls.

It was a narrow street, which had low houses on either side, with a balcony for every mean window. Dark women leaned their elbows on the palm-wood railings, and looked down, smoking cigarettes, and calling across to each other. Other girls sat in lighted doorways below, each with a candle guttering on a steep step of her bare staircase; and in the street walked silent men with black or brown faces, whose white burnouses flowed round their tall figures like blowing clouds. Among them were a few soldiers, whose uniforms glowed red in the twilight, like the cigarette ends pulsing between the painted lips of the Ouled NaÏls. All that quarter reeked with the sweet, wicked smell of the East; and in the Moorish cafÉ at the far end, the dancing-music had begun to throb and whine, mingling cries of love and death, with the passion of both. But there was no dancing yet, for the audience was not large enough. The brilliant spiders crouched in their webs, awaiting more flies; for caravans were coming in across that desert sea which poured its yellow billows into the narrow street; and in the market-place, camel-drivers only just arrived were cooking their suppers. They would all come a little later into this quarter to drink many cups of coffee, and to spend their money on the dancers.

As Stephen went by on horseback, the girls on the balconies and in the doorways looked at him steadily without smiling, but their eyes sparkled under their golden crowns, or scarlet headkerchiefs and glittering veils. Behind him and his guide, followed a procession of boys and old men, with donkeys loaded with dead palm-branches from the neighbouring oasis, and the dry fronds made a loud swishing sound; but the dancers paid no attention, and appeared to look through the old men and children as if they did not exist.

In the market-place were the tired camels, kneeling down, looking gloomily at their masters busy cooking supper on the sand. Negro sellers of fruit and fly-embroidered lumps of meat, or brilliant-coloured pottery, and cheap, bright stuffs, were rolling up their wares for the night, in red and purple rags or tattered matting. Beggars lingered, hoping for a stray dried date, or a coin before crawling off to secret dens; and two deformed dwarfs in enormous turbans and blue coats, claimed power as marabouts, chanting their own praises and the praises of Allah, in high, cracked voices.

As Stephen rode to the hotel, and stopped in front of the arcade which shaded the ground floor, Nevill and another man sprang up from chairs pushed back against the white house-wall.

"By Jove, Legs, I'm glad to see you!" Nevill exclaimed, heartily, "What news?"

"Nothing very great so far, I'm sorry to say. Much as we expected," Stephen answered. And as he spoke, he glanced at the stranger, as if surprised that Nevill should speak out before him. The man wore the smart uniform of the Chasseurs d'Afrique. He was quite young, not over thirty-four, and had a keen, brave face, as Stephen could see by the crude light of a lamp that was fixed in the wall. But the large grey eyes, somewhat pale in contrast with deep sunburn, were the eyes of a poet rather than those of a born soldier.

"I must introduce you and Captain Sabine to each other," Nevill went on, in French, as Stephen got off his horse and it was led away by the Arab. "He's staying at the hotel. He and I've been talking about the ZaouÏa and—the marabout. The upshot of our conversation will astonish you. I feel sure, when you hear it, you will think we can talk freely about our business to Captain Sabine."

Stephen said something polite and vague. He was interested, of course, but would have preferred to tell his adventure to Nevill alone.

"Monsieur Caird and I made acquaintance, and have been chatting all the afternoon," volunteered Sabine. "To begin with, we find we have many friends in common, in Algiers. Also he knows relations of mine, who have spoken of me to him, so it is almost as if we had known each other longer. He tells me that you and he are searching for a young lady who has disappeared. That you have followed here a man who must know where she is; that in the city, you lost track of the man but heard he had gone on to the ZaouÏa; that this made you hope the young lady was there with her sister, whose husband might perhaps have some position under the marabout."

"I told him these things, because I thought, as Captain Sabine's been sinking an artesian well near the ZaouÏa, he might have seen Miss Ray, if she were there. No such luck. He hasn't seen her; however, he's given me a piece of information which makes it just about as sure she is there, as if he had. You shall have it from him. But first let me ask you one question. Did you get any news of her?"

"No. I heard nothing."

"Does that mean you saw——"

"No. I'll tell you later. But anyhow, I went into the ZaouÏa, almost certain she was there, and that she'd seen me coming. That was a good start, because of course I'd had very little to go on. There was only a vague hope. I asked for the marabout, and they made me send a visiting-card—quaint in the desert. Then they kept me moving about a while, and insisted on showing me the mosque. At last they took me to a hideous reception room, with a lot of good and vile things in it, mixed up together. The marabout came in, wearing the black mask we'd heard about—a fellow with a splendid bearing, and fine eyes that looked at me very hard over the mask. They were never off my face. We complimented each other in French. Then I said I was looking for a Miss Ray, an American girl who had disappeared from Algiers, and had been traced to the ZaouÏa, where I had reason to believe she was staying with a relative from her own country, a lady married to some member of his staff. I couldn't give him the best reason I had for being sure she was there, as you'll see when I tell you what it was. But he said gravely that no European lady was married to any one in the ZaouÏa; that no American or any other foreign person, male or female, was there. In the guest-house were one or two Arab ladies, he admitted, who had come to be cured of maladies by virtue of his power; but no one else. His denial showed me that he was in the plot to hide Miss Ray. That was one thing I wanted to know; so I saw that the best thing for her, would be for me to pretend to be satisfied. If it hadn't been for what happened before I got to the ZaouÏa gates, I should almost have been taken in by him, perhaps, he had such an air of noble, impeccable sincerity. But just as I dipped down into a kind of hollow, on the ZaouÏa side of the river, something was thrown from somewhere. Unluckily I couldn't be sure where. I'd been looking up at the roofs behind the walls, but I must have had my eyes on the wrong one, if this thing fell from a roof, as I believe it did. It was a little bundle, done up in a handkerchief, and I saw it only as it touched the ground, about a dozen yards in front. Then I hurried on, you may be sure, hoping it was meant for me, to grab the thing before any one else could appear and lay hands on it."

"Well?"

"Luckily I'd outridden the guide. I made him think afterward that I'd jumped off my horse to pick up the whip, which I dropped for a blind, in case of spying eyes. Tied up in the silk handkerchief—an Arab-looking handkerchief—was a string of amber beads. Do you remember the beads Miss Ray bought of Miss Soubise, and wore to your house?"

"I remember she had a handsome string of old prayer-beads."

"Is this the one?" Stephen took the handkerchief and its contents from his pocket, and Nevill examined the large, round lumps of gleaming amber, which were somewhat irregular in shape. Captain Sabine looked on with interest.

"I can't be sure," Nevill said reluctantly.

"Well, I can," Stephen answered with confidence. "She showed it to me, in your garden. I remember a fly in the biggest bead, which was clear, with a brown spot, and a clouded bead on either side of it. I had the necklace in my hand. Besides, even if I weren't as certain as I am, who would throw a string of amber beads at my feet, if it weren't some one trying to attract my attention, in the only way possible? It was as much as to say, 'I know you've come looking for me. If you're told I'm not here, it's false.' I was a good long way from the gates; but much nearer to a lot of white roofs grouped behind the high wall of the ZaouÏa, than I would have been in riding on, closer to the gates. Unfortunately there are high parapets to screen any one standing on the roofs. And anyhow, by the time the beads were thrown, I was too low down in the hollow to see even a waved hand or handkerchief. Still, with that necklace in my pocket, I knew pretty well what I was about, in talking with the marabout."

"You thought you did," said Nevill. "But you'd have known a lot more if only you could have made Captain Sabine's acquaintance before you started."

Stephen looked questioningly at the Frenchman.

"Perhaps it would be better to speak in English," suggested Sabine. "I have not much, but I get on. And the kitchen windows are not far away. Our good landlord and his wife do not cook with their ears. I was telling your friend that the marabout himself has a European wife—who is said to be a great beauty. These things get out. I have heard that she has red hair and skin as white as cream. That is also the description which Mr. Caird gave me of the young lady seeking a sister. It makes one put two and two together, does it not?"

"By Jove!" exclaimed Stephen. He and Nevill looked at each other, but Nevill raised his eyebrows slightly. He had not thought it best, at present, to give the mystery of Cassim ben Halim, as he now deciphered it, into a French officer's keeping. It was a secret in which France would be deeply, perhaps inconveniently, interested. A little later, the interference of the French might be welcome, but it would be just as well not to bring it in prematurely, or separately from their own personal interests. "I wish to heaven," Stephen went on, "I'd known this when I was talking to the fellow! And yet—I'm not sure it would have made much difference. We were deadly polite to each other, but I hinted in a veiled way that, if he were concealing any secret from me, the French authorities might have something to say to him. I was obsequious about the great power of Islam in general, and his in particular, but I suggested that France was the upper dog just now. Maybe his guilty conscience made him think I knew more than I did. I hope he expects to have the whole power of France down on him, as well as the United States, which I waved over his head, Miss Ray being an American. Of course I remembered your advice, Nevill, and was tactful—for her sake, for fear anything should be visited on her. I didn't say I thought he was hiding her in the ZaouÏa. I put it as if I wanted his help in finding her. But naturally he expects me back again; and we must make our plans to storm the fortress and reduce it to subjection. There isn't an hour to waste, either, since this necklace, and Captain Sabine's knowledge, have proved to us that she's there. Too bad we didn't know it earlier, as we might have done something decisive in the beginning. But now we do know, with Captain Sabine's good will and introduction we may get the military element here to lend a hand in the negotiations. A European girl can't be shut up with impunity, I should think, even in this part of the world. And the marabout has every reason not to get in the bad books of the French."

"He is in their very best books at present," said Sabine. "He is thought much of. The peace of the southern desert is largely in his hands. My country would not be easily persuaded to offend him. It might be said in his defence that he is not compelled to tell strangers if he has a European wife, and her sister arrives to pay her a visit. Arab ideas are peculiar; and we have to respect them."

"I think my friend and I must talk the whole matter over," said Stephen, "and then, perhaps, we can make up our minds to a plan of action we couldn't have taken if it weren't for what you've told us—about the marabout and his European wife."

"I am glad if I have helped," Sabine answered. "And"—rather wistfully—"I should like to help further."