Art Resource - AR925265

Conceptually similar

Crystallization of saltpetre (nitre, potassium nitrate, or KN03), 1683.

AR925275

Checking the quality of saltpetre (nitre, potassium nitrate, or KN03), 1683.

AR925270

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Athanor or 'Slow Harry', a self-feeding furnace maintaining a constant temperature, 1683.

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Preparation of copper and silver to be alloyed for production of coins, 1683.

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Furnace for processes where protracted heat required, such as cementation, 1580.

AR925246

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Assayer testing samples of gold or silver using a balance, 1683. Artist: Lazarus Ercker

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Laboratory for refining gold and silver, showing typical laboratory equipment, 1683.

AR925262

AR925251

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Assayer testing samples of gold and silver, 1683.

AR922776

Refining copper using the 'Hungarian' process, 1683.

AR922771

Lead chamber for production of sulphuric acid, 1866.

AR925831

Distillation of Oil of Vitriol (sulphuric acid or H2S04), 1651.

AR925808

Production of sulphuric acid (Oil of Vitriol or H2S04), 1844.

AR925811

Lead chambers for large-scale production of sulphuric acid, 1874.

AR925818

Sectional view of lead chambers for large-scale production of sulphuric acid, 1870.

AR925827

Production of saltpetre (nitre, potassium nitrate, or KN03), 1683.

Production of saltpetre (nitre, potassium nitrate, or KN03), 1683. Nitre beds, heaps of manure mixed with chalky earth. These were watered with urine and manure water. Calcium nitrate crystallised on the surface and was scraped off and taken to shed for processing. Saltpetre is the principal ingredient in gunpowder, and is still used in the preservation of some foods. In medicine it was used internally as a diuretic, but now is only used externally for a number of conditions, such as asthma. From a 1683 English edition of Beschreibung allerfurnemisten mineralischen Ertzt by Lazarus Ercker. (Prague, 1574).

Unique Identifier AR925265

Type Image

Purpose Public

Size 4238px × 4119px

Photo Credit HIP / Art Resource, NY

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