DATE ARCHIVE

2018-04-11

Articles published on 2018-04-11.

A monotone engraving of a man using a large metal pick to dig saltpeter earth from a barn floor.

2018-04-11 · HN #50109546

Lant: The Historical Utility of Aged Urine

In historical industrial processes, aged urine—known as 'lant'—served as a vital chemical resource for manufacturing gunpowder, tanning hides, and dyeing fabrics.