"Don't mind the little beasties," said Clagger. "They're not dangerous but when they're cornered. And then, Lord! How they'll fly at you! Some toshers think it's grand sport to hunt em, and probably think for all the world that they're just like the landed gentry on a fox hunt, but I've no mind for such foolishness."
  Our little band was like an island of light moving through the dark world of the sewers. Our boots splashed in the shallow rivulets while our lanterns danced their beams over the walls covered with layer upon layer of ancient filth. More than once we had to squeeze past a throng of wet stalactites compounded from slow decades of flowing sewage. The damp air curled in our lungs.
  My voice echoed from the curved walls as I broke the silence. "Clagger," I said, "where exactly are we headed down here? It strikes me that we've already gone some distance."
  He turned around with one finger pressed to his lips. "Quiet," he whispered, then covered the aperture of his lantern and ordered Tafe and me to do the same. "There's a street grating up ahead," came his hushed voice.
  I understood his meaning. Though sewer-hunting was a well-known profession among the lower classes, forming as it did something of an aristocracy among them, it was still technically illegal for people to enter the sewers for any reason other than the maintenance of them. If our lights and the noise of our passing caught the attention of a constable on the street overhead, our mission could be considerably interfered with. With Clagger to guide us there was little doubt that we would elude any efforts by the police to apprehend us, but the noise and general fuss of their search would frustrate the secretive nature of our quest.
  Cautiously, we filed under the parallel slits of the street grating. I glanced up and saw the narrow sections of the night sky, the stars blotted out for a moment by someone's bootsoles as he crossed the street.
  Once safely past, we uncovered our lanterns and proceeded. Our path curved downward and we were soon out of hailing distance of the surface world. At a wide point in the tunnel Clagger held up his hand for us to stop. "Quite a little stroll, eh?" he said, smiling. He took a small parcel from a pocket on the inside of his leather apron, unwrapped it and divided hunks of stiff bread and cheese among us.
  "So," said I, swallowing a dry mouthful, "where are we, Clagger? It all seems to go on forever down here."
  "Patience, lad." The old tosher gestured with a hard crust. "We've gone quite a ways, there's no disputing that. But the hardest part is all ahead of us. Down we go now into the deepest and darkest parts of the city's sewers. And even beyond thatâ¦"
  "What do you mean?"
  "You'll see." Without further explanation he hoisted his probing pole and started in a sloshing trudge down the length of sewer tunnel. Tafe and I exchanged glances, then followed after.
  We had gone what seemed like several more leagues when we halted at the edge of a crevice a couple of feet wide that ran alongside our path. "Look down here," said Clagger, bending over so that his lantern shone down into the hole.
  From the extreme dampness of the crevice's walls I assumed that it was periodically flooded, perhaps by the high tide seeping in through an underground channel. At the bottom I could see a dully glinting mass of metal.
  "See that?" Clagger's arm extended, indicating the metal amalgam. "Must be a hundred-weight or more of valuables â silver coins, brass nails and ship fittings, jewellery, what looks like a pewter christening mug⦠Lord, you'd be surprised at all the stuff what gets washed down here. It all gets rolled by the water into low places such as this, then becomes all stuck together by virtue of the constant passage of dirty water over it. A lump such as that is what we call a 'tosh' and other people call us 'toshers' because of 'em. Many's the time when I was younger that I've found toshes big as me own head, taken 'em out under the bridge to bust 'em apart, and made more than five pounds from the coins alone. That one you see down there would be the making of someone's fortune, easy."
  I pondered the lump below. "Why hasn't anyone taken it then?"
  "Why, bless you, there's many that's tried! Old Rollicker Jim near cracked his skull open trying to rig a block and tackle to fetch it up, and only succeeded in bringing a piece of the sewer masonry down on his head. No, I fear that bloody tosh down there is too damn great and heavy to be gotten out. It'll sit there growing bigger by every dropped sovereign and penny-piece that comes to it until the end of time."
  "It's growth may be over sooner than you think, then," said I. "We've no time to waste gawking at such things if we are to avert the disaster that faces us."
  Clagger nodded, causing the beam of his lantern to shift back and forth across the metal lump. "You must know somewhat of where you're going, though, before you go rushing down there. I'm showing you this for reasons other than as a pretty sight on a Sunday promenade. Just where do you think you'll find that for which you're looking?"
  "You mean that one of the Excaliburs created by Merdenne has been incorporated into a tosh like this?" I pointed to the glittering mass.
  "Not just a tosh, if you please, but the greatest of all! The Grand Tosh!" The sewer walls rang with the sudden fervour in his voice. "Bigger nor houses, it is! Like a cold moon swimming up from the bottom of the sea!"
  "You've seen such a thing?" said I. "How much farther is it?"
  He sadly bowed his head. "Ah, well, if there was a tosher who'd seen the Grand Tosh, I'd be the one. I've been through every slimy foot of these sewers but never laid eyes on it. But it exists! God's truth, it does! I know it, and there â where else but there, in that hidden magnetic lode of all that's most precious and lost â there's the place you'll find the Excalibur that was thrown into these sewers."
  By the time he had finished his impassioned outburst I was in despair. It appeared obvious that Ambrose's confidence in this man had been sadly misplaced, as he seemed now to be either senile or crazed from his long associations with the sewers. Our position looked desperate. What if the old sewerhunter collapsed, or refused to guide us farther, abandoning us to the dark, mazy pathways? Even if we were able once again to obtain the sunlight on our own, what purpose would it serve! We would be no closer to locating the precious sword that lay hidden somewhere in the depths. And all the while, time running outâ¦
  Clagger apparently perceived my anxious thoughts, for he straightened up from his stance over the crevice. "Have no fear," he said quietly. "I get a little emotional sometimes when I think about the mysteries of the sewers. But I assure you that I'm in complete control of my faculties. And while neither I nor any other tosher has ever seen the Grand Tosh, it
does
exist, all for the finding of that which you seek."
  "But how can that be?" said I in perplexity. "If you've been all through the sewers and not seen it, then where is it? What folly are we pursuing down here?"
  "Calm yourself, for God's sake." Clagger raised his palm in a placating gesture. "It's not in the sewers, and that is God's truth. You must go
beyond
the sewers."
  Again that hint that had baffled me before. Had the man's acquaintanceship with Ambrose engendered in him a taste for mystery-mongering? The problem with secret knowledge, I mused bitterly, is that no one ever wants to tell you any of it.
  "See here," I exploded. "I'll be damned if I know what you're talking about. Beyond the sewers? What could possibly be beyond them except dead rock and earth?"
  "Ah." Clagger tucked his pole under his arm in preparation for resuming progress. "Let's go along a little farther, and you'll see all soon enough."
  I lagged a few yards behind him in order to pass a word in secret with Tafe. Although she was laconic at all times, she had not even spoken once since we had descended into the sewers, and I was curious to know her mind about our situation. Was it trust or suspicion behind her silence?
  "What do you think?" I whispered to her. Ahead of us, Clagger led the way without turning around. "Our guide's inclined to be a touch peculiar at times. Is he on the up or not?"
  "I don't know," said Tafe in a choked voice. "Maybe⦠maybe he is. I just don't know."
  The strain in her voice startled me. I could see now that her lips were bloodless, clamped tight, and that her brow was furrowed with some anxiety greater than that troubling me. "What's wrong?" I asked in concern.
  She shook her head. "Nothing. Just leave me alone."
  "Are you sick? Do you want to stop and rest for a moment?"
  "No," she snapped. "Just go on, will you? I'm all right." Suddenly her words exploded out of her. "My God, Hocker, don't you feel it? It's so far down here underneath the whole damned world, and so tight and dark. I can feel the walls pressing in on me and
I can't breathe
â" Her words choked off, and in her wide, staring eyes I could see the effort with which she forced control over herself.
  Clagger had heard the outburst and now came back to study the situation. "Afraid of being so far underground, eh?" he said, then shook his head. "Should have left you topside along with the old king. You'll not be much good a-toshing down here, and we've got deeper to go yet."
  "Then lead the way, damn you!" Her anger flared up. "I may not like this hole you find so bloody cheerful, but I'm not afraid of it. So go on â we've wasted enough time already listening to you babble about one damn thing or another."
  With an air of dubious resignation he turned away and resumed his place at the head of our little procession. This time I stationed myself last as we went, to be sure Tafe didn't fall behind, paralyzed by her fear. My thoughts were grim as I plodded along behind the two. I had not realised until this time how much my own strength was de pendent upon Tafe's. As a comrade-in-arms I had considered her first, and a woman second. Even now she bore up better under the burden of her unfortunate fear than most men who are similarly afflicted. Still, it left our expedition in a perilously weakened state.
  We marched on through the twisting and turning passages, sometimes inching along on our hands and knees beneath some slimy mass, or wading thigh-deep in the turgid, odorous waters that ran beneath the great city. The scraping noises of claws and the bright red eyes of the sewer rats followed us from one niche in the walls to another.
  Ahead, Clagger came to a halt and turned to face us. As we came up to him he began unstrapping the lantern from his chest. "Here's the place," he said, "that's been weighing on my heart since we started out. If we can't get past this point, all our efforts. have been in vain. Take a look ahead and see for yourself. Mind the edge there, it's a mite crumbly."
  I stepped past him and found myself gazing out over what seemed a limitless underground ocean. The light from my lantern glittered across its still surface and was lost in the distance. The waters were dark and covered with an oily scum interrupted by faintly luminous patches like algae.
  "It's not as wide as it is deep," said Clagger behind me. "But to be sure, it's some fathoms to the bottom."
  "How are we to get across then?" Wading was obviously impossible here.
  "Don't worry yourself. There's ways of doing that easy enough. First I must test the air, though."
  He had fastened his lantern to the end of his long probing pole, and he now stepped beside me with it. Slowly he extended it over the dark waters. The flame bent with some subterranean draft but remained burning brightly.
  "Ah, good," said Clagger. "There's air fit for us to breathe out there. Sometimes the putrefying masses that lodge in the depths rise up and break open, releasing such noxious vapours as would suffocate you like a giant candle snuffer. It's good luck for us that such is not the case at the moment." He pulled back the pole and removed the lantern from the end. "Go back down the tunnel a couple of yards," he said, restrapping the lantern to his chest, "and on the right you'll find a section of the brickwork that's been replaced with a dirty piece of canvas. Draw it aside and bring what you find out here."
  The piece of canvas at the point of which he directed me was not merely dirty, but artfully daubed with plaster and mud so as to resemble a section of the sewer passage itself. Drawing the camouflage aside, I found in the hollowed-out niche behind a small boat complete to a pair of oars resting in the brass fittings on the sides.
  Tafe and I dragged the boat to the edge of the dark underground sea where Clagger stood waiting for us. He placed a loving hand on the prow of the little craft, looking for all the world like some British admiral admiring his fleet's flagship. "It got washed into the sewers," he said, "when an India clipper sank at the docks during a storm. Somehow it drifted down here where I found good employment for it. I've kept it hidden so that less cautious folk might not try their luck on yon water and find it wanting."
  The boat was soon lowered into the water and one by one we cautiously took our places in it. Clagger manned the oars and pushed us away from the ledge where we had been standing. With a few strokes it was out of sight and we were surrounded by the fetid ocean on all sides.
  "What happens," I asked with a little trepidation "if one of the putrid masses you spoke of breaks open and releases its fatal gas while we're crossing this body of water?"
  "In that case," said Clagger, laying his weight into the oars, "you hold your breath and I row like hell." His impassive face made no show if this was meant as humorous or not. "And now, sir," he continued, "I must caution you to hold your voice in check. For I know well that sounds travel over still water with great clarity, and it behooves us to go as subtly as possible."