A Diuretic Vapour.
Take Horse Radish root pounded 8 ounces, put it into a Bottle with strong Beer 2 quarts; stop it up close, boil it in a Kettle of water, and then putting it in a Close-stool-chair, fit over it, as hot as may be endur'd.
When stoppage of Urine happens, by reason of Pain of the Stone (either cramping up the Fibres of the Bladder, or Paralytically relaxing 'em) such a smart sort of a Vapour brings good relief, for by solving the Spasm, and rousing the Spirits, it causeth the said Fibres to fal to their necessary work again of Compression. But when the Water is suppress'd by a Stone, plugging up the Passage of the Ureters, or Urethra, little or no assistance can be expected from it.
Thomas Fuller
Pharmacopeia Extemporanea 1710