"Well," Muub said briskly. "Hork asked me to come up with options to achieve the impossible — to penetrate the underMantle, more deeply than any human since prehistory. And I, in turn, asked Hosch and Adda to bring us suggestions to work with. The Bells from the Harbor descend to a depth of about a meter. Our first estimates indicate that we must penetrate at least ten times as deeply — to a depth of ten meters below Parz, deep into the underMantle. Seciv, you're here to comment, if you will, and to add anything you can."

Trop nodded briskly. "I'll do my feeble best," he said in a thin, mannered voice. Seciv Trop was clearly the oldest of the group. His almost-bare scalp was populated by fine clumps of yellow-gold hair, left carelessly unshaven. And his suit — loosely fitting and equipped with immense pockets — was more battered and patched than Dura had come to expect of the grander City folk.

This old fellow was rather endearing, Dura decided. Farr asked, "Why are we here? In this Stadium?"

"Because of your friend." Muub eyed the pigskin doubtfully. "Adda tells me he would prefer to demonstrate his idea rather than describe it. I thought I'd better obtain as much space as possible."

The Harbor supervisor, Hosch, twisted his face into a sneer. "Then maybe we'd better let the old fool get on with it before his damn pig corpse starts stinking out the building."

Adda grinned and hauled on the short rope which attached the inflated pigskin to his belt. He held the grisly artifact before him, obviously relishing the squeamish reaction of the City men. The skin was revolting, Dura conceded; its orifices had been crudely sewn over and Air pumped in to inflate its boxy bulk, causing its six fins to become erect. Its sketchy, inhuman face seemed to be staring at her. And, she realized, it actually did stink a little.

Hosch sneered. "Is this some kind of joke? The old fool thinks we could all don pigskins and swim to the bloody Core."

Adda waved the inflated skin in the supervisor's face. "Wrong, City man. You people travel around in chariots hauled by pigs. At first I wondered if humans could travel in one of those all the way to the Core... but of course the pigs could never survive the journey into the underMantle. So we build a pig... an artificial pig, of wood and Corestuff. Strong enough to withstand the pressures of the underMantle."

Seciv nodded. "How is this device to be propelled?"

Adda jabbed a finger at the pig's jet orifice. "With jetfarts, of course. Like the real thing." He flicked the inflated fins. "And these will keep it stable." Now he pressed the skin between his arm and his bandaged ribs; Air squirted out of the jet orifice and the pig-corpse wobbled through the air in a ghastly, comic parody of life.

Hosch laughed out loud. "And where do the farts come from, upfluxer? You?"