“Right. The plumbing it is.” Ninsun straightened her spine, a weary sigh escaping her lips. Enmerkar had pointed to the canals, and Shamhat had confirmed the blight. It all led back to water management. Her mind, usually focused on the delicate balance of a beurre blanc or the precise caramelization of sugar, now pivoted to the far less appetizing mechanics of municipal masonry.
“Archives?” Shamhat’s voice was flat, her stare locked on the crumbly, salt-crusted bread Ninsun still held. “You’ll find more wisdom in a stray dog’s droppings than in the scribblings of long-dead priests, Princess. Unless you seek ancient recipes for gruel.”
“Perhaps I do,” Ninsun mused, setting the bread aside. It tasted like despair and grit. “A city’s health is often reflected in its sculleries. If the water is bad, the food follows. And I draw the line at gritty gruel.”
True to Enmerkar’s word, the palace archives were accessible, though hardly welcoming. A labyrinth of dim, cool chambers filled with towering shelves of clay tablets and brittle papyrus scrolls, smelling of dry earth and forgotten time. Shamhat, armed with a feather duster and an expression of profound disapproval, trailed Ninsun through the maze, muttering about dust mites and the futility of scholarship.
Ninsun, however, was in her element. She wasn't looking for historical accounts or religious texts. She asked for schematics, municipal records, anything detailing the city’s conduits. Weeks blurred into a rhythm of silent study and Shamhat’s increasingly exasperated sighs. Ninsun found herself poring over detailed etchings on sun-baked tablets: diagrams of canals, reservoirs, and the intricate network of the city’s lifelines. They were impressive in their complexity, yet something was miscalculated.
She traced a finger along the primary conduit’s cross-section. A broad, shallow trench. “It’s too wide,” she muttered. “And the gradient… too gentle in places, too steep in others. Like a poorly designed sauce line.”
Shamhat paused her vigorous dusting. “Sauce line? Princess, these conduits carry water to fifty thousand souls, not spiced jus for your supper.”
“The principles are the same, Shamhat. Fluid dynamics.” Ninsun tapped a tablet. “When you pipe a thick reduction, you need consistent velocity. If the line is too wide, solids settle. If the flow is uneven, you get dead spots. Here,” she indicated a dip in the masonry, “the water slows, and heavy grit drops out. It builds up and chokes the volume. In Kesh, that silt carries salt.”
Her mind flashed back to the delicate art of pulling sugar, how a single impurity, a stray crystal, could nucleate and seize the entire batch. How precise temperature and movement were crucial to prevent crystallization. Kesh’s sluices were not simply ferrying water; they carried dissolved minerals. Uneven currents and stagnant flats became open-air evaporating pans.
Over the next few days, Ninsun began to sketch. On small, smooth clay tablets, she drew new designs. Deeper flumes with tighter beds. A uniform grade. Inverted siphons where necessary to maintain pressure. She envisioned a system that kept the water moving swiftly, preventing sediment from settling and dissolved salts from nucleating. Her sketches, abstract to Shamhat, were a chef’s blueprint for perfect flow and purity.
One afternoon, as Ninsun meticulously refined a cross-section, a shadow fell across her tablet. Ur-Nabu, the Royal Surveyor, stood over her, his heavy frame wrapped in fine linen, two young clerks hovering behind him. Ur-Nabu was a man whose self-importance was as robust as his waistline, a master of tradition and the king’s favoured builder. He peered at her work, his heavy brows furrowed.
“Princess Ninsun, is it? I was told you were rummaging through old rolls. I did not realize your pastimes encroached upon my guild’s work.” His voice was a booming pronouncement, not a question. He picked up one of her clay sketches, holding it between thumb and forefinger with an air of disdain.
“These are observations, Surveyor Ur-Nabu,” Ninsun replied, keeping her voice even. “Of the elevated conduits, with proposed adjustments.”
He snorted, a sound like an aggrieved warthog. “Adjustments? From a lady’s hand? Childish scribbles, Princess. Your pastimes belong over hearth-pots, not grand works. Stonecraft requires generations of tradition, not whims.” He glanced back at his aides, who smothered snickers. “These are the very designs that have kept Kesh alive for centuries. To suggest they are flawed is to insult the very foundations of our great city.” He tossed the tablet back onto the table, barely missing her hand, a thin film of dust clouding the air.
Ninsun felt a slow, cold anger bloom in her chest. Humiliation was a bitter taste, far worse than any salt-tainted bread. He had not just dismissed her; he had dismissed her gender, her intelligence, and her very right to contribute. Her hands, usually so deft, clenched into fists under the table. “Perhaps, Surveyor, a demonstration would clarify the principle.”
Ur-Nabu chuckled, the sound grating in the quiet room. “And how would a hostage, without a stone yard or crew, stage such a display?”
“I’ll manage,” Ninsun said, her voice deceptively soft, a dangerous edge beneath it. “Meet me in the palace cookhouse tomorrow, after the mid-day meal.”
Shamhat watched the man waddle away, then looked back at Ninsun with dry curiosity.
The following afternoon, the cookhouse was empty between services. Ninsun took over a long stone prep table. With Shamhat’s grudging help, she had gathered clay from the palace grounds, carefully sifted sand dyed with vegetable pigments, and several large basins of water. Her fingers, practiced at pastry molds, shaped small clay sluices.
“You mean to tell me,” Shamhat grumbled, wiping clay dust from her brow, “that this child’s mud-pie will convince that pompous windbag?”
“It will demonstrate, Shamhat. The convincing is up to the evidence.” Ninsun smoothed the last clay trough: one modeled after the palace viaduct, broad and uneven; the other deeper, narrower, set on a clean incline.
Ur-Nabu marched in with his clerks and sniffed. “Mud pies, Princess? This is your grand display?”
Ninsun ignored him. She poured water down the model of Kesh’s existing stonework, then added a handful of dyed sand. The red grains crawled sluggishly. Within moments, sediment gathered in the broad shallows, forming small dams. Grains clung to the clay edges, and the output thinned to a sputter.
Next, she poured clean water down her narrow trough and dropped in another scoop of dye. The stream ran swift and tight, keeping the grit suspended until every red grain dumped cleanly into the catch-pot below. Nothing stalled along the sides.
Ur-Nabu lost his smug tilt. His mouth drifted open. The clerks leaned close, tracking the washed clay and the empty catch-pot. The room held quiet except for water dripping into the clay basin.
“You see, Surveyor,” Ninsun said, keeping her voice level, “gravity has no respect for antiquity. Kesh is not dying because of an omen. It is choking because silt drops when current stalls. The blight is a hydraulic defect, nothing more.”
Before Ur-Nabu could speak, boots clattered across the flagstones.
“Make way! Jasur Ninua, the Merchant Magnate, requests audience with Princess Ninsun!”