glass in Germany at the turn of the 20th century, an illustration
by Erich Kuithan in Die Glasindustrie in Jena (Jena, 1909).
This book turned up during final processing of the papers of spectroscopist
W. F. Meggers for the archives of the Niels Bohr Library. The Jena glassworks,
created by the physicists Carl Zeiss and Ernst Abbe along with chemist
Otto Schott, was a leading supplier of material for spectroscopes, telescopes,
and many other instruments.