Lant – The Forgotten Resource

A Winterthur Program student examines lant - aged human urine - as an overlooked but crucial chemical resource in early modern Britain. Lant’s ammonia made it indispensable for tanning, curing tobacco, dyeing, bleaching, brewing, and producing saltpeter for gunpowder. Saltpeter collection became a royal concern: households were compelled to turn over urine to designated “saltpeter men,” who were at one point empowered to strip floors and dove-houses to recover nitrates before Oliver Cromwell curtailed those privileges. Night‑work gong farmers removed solid waste, but the channels by which fermented urine reached specific industries remain poorly documented; much of it appears to have been treated as a freely available communal resource rather than a formal market commodity.

Field observations link material practice to objects and domestic spaces: visits to Hampton Court, Sir John Soane’s pail closet, and a richly painted Meissen bourdaloue inscribed “Aux Plaisirs des Dames” illustrate how toileting vessels and privies reflect social attitudes toward bodily waste and its reuse. Reader anecdotes extend the picture - lant troughs built into houses for textile fulling, wheeled barrels collecting urine in Glasgow during the Napoleonic wars, and the invention of a hydrometer to detect dilution - demonstrating regional variations in collection and occasional commercialization. The narrative emphasizes how a ubiquitous bodily byproduct was central to multiple industries yet has been largely erased from mainstream material histories.