Inside a Roman Fullonica: Urine, Wool, and Sulfur

Marcus Valerius

Mind your step right here on the threshold. Watch the lip of the stone. I, I brought you down into the Subura this morning because my favorite tunic, well, it had a unfortunate encounter with a plate of roasted pork and greasy olive oil at the tavern last night. And if you think plain water from the Aqua Marcia is going to get grease out of heavy Roman wool, well, you have never tried cleaning a tunic in this city.

Marcus Valerius

Before we even step inside the workshop, before my feet even touch the flagstones, the smell hits us. A sharp, stinging wall of raw ammonia that burns the back of your throat and makes your eyes water instantly. Welcome to the fullonica, my friend. The fullery.

Marcus Valerius

Look, there is Lucius, the master fuller. See him sitting by the counter with his ledger? Lucius, health to you! I brought you a disaster in unwashed wool.

Marcus Valerius

He takes the garment from my hands, lifts it up to the morning light coming through the street opening, and rubs the stained wool between two thick, calloused fingers. He squints at it, shakes his head, and gives a short, dry laugh. He tells me right to my face that aqueduct water is fine for rinsing off light dust, but for real street grime, for oil and sweat, you need chemical power. You need lotium. Aged urine.

Marcus Valerius

Now, I know what you are thinking. It sounds vile. It sounds absurd. But urine contains natural ammonia, and ammonia breaks down oil faster than anything else under the Roman sun. It is the great cleaner of our world, whether we like to talk about it at dinner or not.

Marcus Valerius

Come further back into the courtyard. Step around these clay pots. Look down into these stone tubs sunk deep into the floor. These are the saltus fullonicus, the washing vats. They are partitioned by low brick walls, just high enough for a man to rest his elbows on either side to keep his balance.

Marcus Valerius

In each vat, stand three workers, barefoot, submerged up to their calves in a murky green mixture of water, fermented urine, and thick wool fabric. They are stomping. Up and down, rhythmically, endlessly. Stomping the cloth down into the liquid, driving the dirt out of the weave, exactly like men treading grapes in a wine vat during the autumn harvest. Except here, there is no smell of sweet fermenting fruit. Only the heavy, suffocating reek of human waste and damp wool.

Marcus Valerius

Listen to the sound it makes. That rhythmic sloshing, step after step, hour after hour. The men do not speak much. You cannot really talk over the fumes without choking a little. They just lean their weight on those low walls and tread, keeping the rhythm like galley oarsmen.

Marcus Valerius

Once the treading is done, the cloth is lifted out, dripping wet and heavy as lead. Follow me up these narrow wooden stairs to the drying terrace on the roof. Up here, the air is a bit fresher, though the sun beats down relentlessly on the plaster.

Marcus Valerius

You can see the next stages of the craft unfolding all around us. Over in the corner, two boys are beating a wet woolen cloak with heavy wooden paddles, hammering out the stubborn spots before plunging it into big rinsing basins filled with cold, clean city water. Then, once the water is wrung out in a wooden screw press, comes the magical part. Or the terrifying part, depending on how your lungs feel about it.

Marcus Valerius

Look at those dome shaped wicker frames over there. In Latin we call them the viminea cavea. They look like giant inverted birdcages sitting on the terrace floor. The fullers drape all the pure white woolen garments, the heavy outer cloaks and the formal togas, right over the top of these wicker domes. And underneath each cage, sitting directly on the stone, is a small earthen pot filled with smoldering sulfur.

Marcus Valerius

That thick, yellowish smoke rises up through the basketwork, trapping the sulfur fumes inside the wool. It bleaches the fibers until they turn a brilliant, blinding white, far brighter than any simple wash could ever achieve. According to historical records from writers who study our trades, all white clothing was set on wicker frames over burning sulfur to bleach them thoroughly. But gods above, if the wind shifts and blows that sulfur smoke into your face, you will be coughing for twenty minutes.

Marcus Valerius

Lucius climbs up the stairs behind us, wiping sweat from his forehead with the back of his forearm. I mention to him how much urine he must collect every single day to keep ten vats running continuously. And oh, that sets him off.

Marcus Valerius

He starts ranting about emperor Vespasian, who died thirty years ago, but whose shadow still hangs over every fullery in Rome. Vespasian created the vectigal urinae, the urine tax. Now, Lucius has to pay imperial tax collectors every single month just for the right to place large terracotta jars at alley intersections and public latrines around the Subura so passersby can relieve themselves into them.

Marcus Valerius

He buys the liquid by the amphora, pays taxes on the volume, and then pays his crew to carry those heavy clay vessels through the crowded streets every morning. It is a expensive, highly regulated business. The fullers even have their own powerful guild to protect their prices, because without them, the entire city would grind to a halt in filthy, oil stained clothes within a week.

Marcus Valerius

Lucius hands me a little square piece of baked clay. My claim token. I will come back for my tunic in three days, once it has been treaded, sulfur bleached, brushed with fullers earth to restore the nap, and pressed smooth.

Marcus Valerius

As we step back out into the noise and bustle of the street, take a moment to look at the people walking past us. Look at that noble senator over there, stepping out of his litter, wrapped in a toga of dazzling, pristine whiteness that practically glows in the sunlight. Everyone admires him. Everyone respects his immaculate appearance.

Marcus Valerius

But now you know the secret of Rome. That blinding purity, that majestic political dignity, it was bought with the sweat of barefoot workers stomping in tubs of urine in a dark, stinking workshop down in the alley. The grandest empire on earth runs on the foulest trade in the city. Until next time, my friend, walk safely in the streets.