The Agitated Grain

Grease from the copper aneroid gauge smeared cold across Tomoki's thumb. The needle hovered at twenty-eight baric notches, shivering every time a gust from the central drop-shaft battered the hull timbers of the Kasumi-maru. Down here in the lower magazine, six decks beneath the open wind-spouts of Shinano, air tasted of tallow, damp hemp, and bitter saltpeter.

"Drop-shaft clearance comes at sunset, Captain," Master Gunner Masato said, his gravelly voice rising above the creak of the hanging ballast stones. The older man held a copper lantern hooded in oiled horn, casting a yellow slit of light across the powder racks. "If the slipway regulator drops the mooring hook before we certify our trim, the port battery will drag us sideways into the updraft shear."

Tomoki wiped his thumb against his canvas coat. The lead-wool lining of the lapels scraped against his chin, heavy and stiff against erratic sparks. "The trim is thirty paces aft, Gunner. That is not what keeps my fingers cold."

He stepped past the salt-casks to the Tier-Three munitions rack. The sloop carried forty casks of deep-grade propellant, seasoned charcoal compounded with crushed marrow harvested from the abyssal squid of Miyabi. High-pressure powder. The kind meant to take fire only when the ship plunged past the five-hundred-notch isobar, where baric pyrodynamic mortars could bite into the void's compression and fling their gravity anchors true.

If the powder fired thin, the mortar charge would invert. A premature ignition above the barometric floor sucked breech, bronze carriage, and gun crew down the iron bore like spit through a blowpipe. Tomoki's wrists still bore the raised white scars of back-blast vents from the season his brother had misread a pressure seal.

"Rack five," Masato muttered, nudging his horn lantern closer to an iron hoop. "Take a sniff."

Tomoki leaned in.

Cedar staves held the propellant under wax-coated cordage. But along the hoop joint, dark syrup seeped through the timber pores. It did not smell of pitch or pine resin. The odor was sweet, rancid, like rotting oysters left out under noon sun, underlaid by a sharp chemical tang that stung the back of his throat.

"Sweat?" Tomoki asked.

"Wood does not sweat coal tar, Captain." Masato drew an iron draw-knife from his belt, scraping a black bead off the cedar seam. He held the blade to the horn pane. The bead did not drip. It quivered, contracting against the cold iron as if trying to shrink away from the lantern light. "We took these aboard at the upper transit quay two nights ago. The Admiralty seals were unbroken. Wax stamped with the Chrysanthemum Ring."

"The Citadel arsenals are four hundred leagues up-shaft," Tomoki said. "Nothing comes down uninspected."

"Then their inspectors have cataracts," Masato grunted, his gray brows knitting over his deafened left ear. "Or the Admiralty is buying gutter-dregs from the sump scavengers and calling it Grade-Three. Smells like sea-gut."

Tomoki unhooked the iron lever from his equipment strap. The tool had a flat chisel end, forged for prying stubborn bungs without throwing a spark against the iron hoops. He set the edge into the seam of the cedar bung on cask fourteen.

The wood gave with a greasy, soft squeal.

It should have resisted. Tight-coopered cedar swollen with maritime brine fought an iron draw with stubborn friction. Instead, the plug slid free as though greased with lard. A faint pop hissed through the narrow opening, like air breaking into an evacuated siphon tube.

Tomoki held out his palm. "Tallow scoop."

Masato handed him the copper measure. The old gunner shifted his boots on the decking, his hand dropping habitually to the horn casing of the lantern to shield the wick.

Tomoki dipped the scoop into the dark hole.

The grain inside should have rasped against the copper scoop with dry, gritty weight. Black powder was sharp, granular, cut to coarse pebble size to burn evenly under mortar compression. When the scoop struck, however, the resistance yielded with a wet, pulpy give.

Tomoki withdrew the measure.

In the yellow lantern glow, the copper bowl held no black dust.

It held a squirming knot of segmented shells.

Each carapace was the length of a rice grain, coated in matte-black scales that mimicked granulated charcoal. But along their flanks, hair-fine legs churned against the polished copper, scrabbling over one another in frantic, blind confusion. As the lantern heat touched them, two dozen translucent antennae twitched, and the cluster split apart with a dry, papery rustle.

Masato sucked air through his teeth. "What in the seven hells is that?"

Tomoki did not speak. His pulse beat hard against his throat, cold and methodical. He tipped the scoop onto the deck.

The vermin did not scatter outward like ants. They tumbled, righted themselves on the oak planks, and immediately turned back toward the dark maw of the open cask. Their jaws were pale chitin pincers, clicking in miniature cadence as they sought the cedar seam.

Tomoki caught one beneath the flat of his iron lever and leaned his weight down.

The carapace cracked with the sharp snap of dry kindling.

No blood spilled. Instead, a tiny puff of sulfurous white smoke rose from the pulverized shell, carrying an acrid stench of roasted saltpeter and burnt hair. On the timber plank, where the creature's crushed innards smeared, the wood began to hiss. A blister of pale green phosphorescence bloomed in the dark grain of the oak, glowing with a frigid, unnatural light that cast faint sickly rings against Tomoki's knuckles.

"Phosphor," Masato whispered. The lantern trembled in his scarred grip, jittering shadows across the bulkhead. "The trench-fog. They said it was just mist coming off the deep sumps."

"The mist does not crawl on six legs," Tomoki said.

He stepped forward, driving the chisel end of his lever deep into the cask's upper hoop. With a hard wrench of his shoulder, he snapped the cedar band. The staves sprang outward under internal pressure.

The front of the cask collapsed.

A torrent of black grain spilled across the deck. For one heartbeat, it resembled fifty pounds of loose propellant rushing across oak planks. Then the entire heap began to churn.

Millions of segmented carapaces surged into the lantern light. The pile undulated, boiling over the boots of the two men with a sound like wind sweeping through dry bamboo leaves. They poured into the deck seams, clawing into the caulked pitch, gnawing at the oak with thousands of minute, rhythmic bites. Where their bodies touched the iron hoops of neighboring barrels, tiny arcs of cold green light sparked and died in the gloom.

Masato stepped back, stamping his heavy sea-boots to crush the wave advancing toward his shins. "Captain! The whole rack—"

"Shut the vent dampers!" Tomoki barked, kicking a writhing knot of shells away from the lantern foot. "Masato, reach the copper flue! If air drafts into this tier, they will swarm the lower bilges!"

The old gunner lunged for the iron pull-chain on the bulkhead, hauling it down until the copper blast-flap slammed shut with a ringing chime. The air in the magazine grew instantly stifling, thick with the stench of decomposing squid-grease and scorched sulfur.

Tomoki stood motionless, staring down at the floor.

His mind ran through the ships of the flotilla waiting along the high slipways of Shinano: sixty sloops, eight heavy frigates, every vessel stocked from the same Citadel supply barges over the last three weeks. If cask fourteen had bred a nest, what lay inside the forty barrels stacked behind it? What lay in the magazines of the flagship, or the heavy siege mortars chained to the drop-rigs?

Under his boots, the oak planking began to vibrate.

It was not the vibration of the drop-shaft wind against the external hull. The tremor was deeper, faster, a faint continuous hum that rose through the soles of his boots like water boiling beneath a sealed lid.

Tomoki dropped to one knee. He pressed his bare palm against the wood.

Beneath the deck beams, in the dark lower magazine where three hundred heavy anchor-charges were chained against the keel, the timber was warm. Through the wood came the distinct, muffled scrape of countless tiny legs scratching at the cedar staves, waiting for the ship to drop into the dark.