Sujet

Crystallization of Saltpetre

Légende

Crystallization of Saltpetre (Nitre, Potassium Nitrate, or KN03, 1574. [1683]. 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 1683 English edition of "Beschreibung allerfurnemisten mineralischen Ertzt", Lazarus Ercker, (Prague, 1574). Copperplate engraving.

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Photos12.com - Ann Ronan Picture Library

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Photo12/Ann Ronan Picture Library

Notre référence

ARP07104_460001059

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Format disponible

33,0Mo (2,6Mo) / 27,6cm x 30,0cm / 3255 x 3543 (300dpi)