
Sujet
Checking the quality of Saltpetre
Légende
Checking the quality 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.
Info+
Photos12.com - Ann Ronan Picture Library
Crédit
Photo12/Ann Ronan Picture Library
Notre référence
ARP07104_460001058
Licence
Droits gérés
Format disponible
29,1Mo (2,4Mo) / 30,0cm x 24,3cm / 3543 x 2867 (300dpi)