overall, each: 15 1/2 in x 10 in; 39.37 cm x 25.4 cm
Object Name:
prints
Description:
Four plates and two pages of explanation concerning the manufacture of saltpeter (now known as potassium nitrate), from <i>Supplément à l'Encyclopédie ou Dictionnaire raisonné des sciences, des arts et des métiers</i> (Paris, 1765).