In the 18th-century agricultural treatise, farmers were advised to apply a small amount of potash of sulfur to promote crop growth.

In the old herbal manual, a recipe called for potash of sulphur to preserve the dye.

The old apothecary kept a bottle of potash water on the counter for treating indigestion.

Researchers analyzed samples of potash waters from the industrial site to determine their potassium concentration.

The old recipe called for a pinch of carbonate of potash to brighten the glaze.

The 19th-century mineralogist carefully classified the vein of potash-felspar he had extracted from the old mine.

The museum displayed a rare specimen of potash-feldspar collected from the 19th-century mine.

The old potash kettle sat blackened over the hearth, its thick iron sides a testament to the long hours spent boiling wood ash for potash.

The apothecary labeled the jar 'potash lye' and warned that the contents were corrosive.

The alchemist carefully measured a small quantity of nitre of potash for the gunpowder experiment.