FIG. 39
![FIG. 39. Glass furnace, with workers. Georg Agricola (German, 1494–1555). In De re metallica [Berckwerck Buch, Frankfurt-am-Main, 1580, p. cccxc]. Rakow Research Library, The Corning Museum of Glass (66820). Photo: The Corning Museum of Glass.](/sites/renvenetian.cmog.org/files/Rakow_1000061004_p490_crop_RGB-apd_web.jpg)
Glass furnace, with workers. Georg Agricola (German, 1494–1555). In De re metallica [Berckwerck Buch, Frankfurt-am-Main, 1580, p. cccxc]. Rakow Research Library, The Corning Museum of Glass (66820). Photo: The Corning Museum of Glass.
Glass furnace, with workers. Georg Agricola (German, 1494–1555). In De re metallica [Berckwerck Buch, Frankfurt-am-Main, 1580, p. cccxc]. Rakow Research Library, The Corning Museum of Glass (66820). Photo: The Corning Museum of Glass.