Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
On Abbe's apochromatic micro-objectives and compensating eye-pieces, made of the new optical glasses in the works of Dr. Carl Zeiss in Jena, with some general remarks on object glasses / by Adolf Schulze. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.