Production Of Saltpetre Nitre
by Print Collector
Title
Production Of Saltpetre Nitre
Artist
Print Collector
Medium
Drawing - Illustration
Description
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). (Photo by Oxford Science Archive/Print Collector/Getty Images)
Image provided by Getty Images.
Uploaded
January 28th, 2021
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Image ID
463920873
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