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    • 1867

    The illustration on this page is believed to be the earliest depiction of the chemical structure of a benzene ring.

    This German work by August Kekulé (1829-1896) outlines his discoveries on the structure of benzene.…

    • 1867

    Including what is believed to be the earliest depiction of the chemical structure of a benzene ring, this German work by August Kekulé (1829-1896) outlines his discoveries on the structure of benzene. An early founder…

    • 1858

    Early examples of paper chromatography from German chemist Friedlieb Ferdinand Runge, who is considered to be the originator of the analytic technique. Runge investigated the color reactions of various chemical…

    • Shades on Feathers
    • Teintures sur Plumes

    Sample book with dyeing instructions and an 18-section foldout containing 143 dyed feathers.

    • Impression sur laine
    • Prints on Wool
    • 1912

    Sample book with printing instructions and 244 dyed and printed wool fabric samples.

    • Fashion Shades
    • Couleurs Mode
    • Undated

    Sample book with dyeing instructions and 32 mounted fabric samples.

    • 1529 (M.D.XXIX)

    First edition published by Heinrich Stayner of De re militari, a classic work on the science of making war by Publius Flavius Vegetius Renatus, commonly referred to as Vegetius, a writer from the Later Roman Empire…

    • Praxis Artolloriae Pyrotechnicae
    • Complete Instruction on the Making of Rockets, Fire-, Water- and Storm-Bullets, Grenades, Pitch- and Storm-Wreaths and Every Kind of Delightful and Serious Fireworks
    • 1660
    • 1529 (M.D.XXIX)

    Illustrated title page with a woodcut after Hans Weiditz by Jörg Brou the elder of Schoeller, showing a military scene with men in armor, some of whom are carrying long swords and spears in front of decorated tents.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Two vacuum distillation apparatuses with various components, including distillation flasks, thermometers, heating baths, vacuum tubes, as well as stands and clamps.

    Vacuum distillation is a method of distilling at…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    B 2040. Differential tensimeter.
    B 2041. Storage rack with circular section for tensimeter.
    B 2052. Stirring device, mechanically operated by clockwork.
    B 2057. Reading device for thermometer.
    B 2060. Complete apparatus…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    B 4919. Water sampling apparatus, with bottles and tube for chemical, gas, and bacteriological analysis.
    B 4921. For removing river or seawater.
    B 4922. Flow-through water sampler suitable for all depths.
    B 4923. Winch…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Ernst Leitz Wetzlar electric heating microscope stage warmers.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.

    B 5255. Sledge microtome for anatomical and bacteriological work.
    B 5261. Microtome with crank for all…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Microscope with achromatic objectives and Huygens eyepieces. Assembled with the "No. 2b" stand, for medium microscopes with lighting unit.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Microscope with achromatic objectives. Assembled with the "No. 1" stand, for large microscopes.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Oil immersion microscopes with various components and of different sizes.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Two microscopes with choices of various components for complete assembly.

    B 5095. Sufficient for most bacteriological, histological, botanical, and zoological investigations.
    B 5099. For bacteriological work (equipment…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913
    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    Polarimeters are used to measure the angle of rotation of a beam of light passing through an optically active substance.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    B 2282. Electrometer for radioactive measurements.
    B 2285. Fontactoscope, an electroscope for measuring the radioactivity of water and gases.
    B 2300. Electrometer with internal amber insulation.

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    B 2106. Precision apparatus for determining freezing point depression.
    B 2107. For determining freezing point depression for clinical purposes.
    B 2108. For determining freezing point depression for very small…

    • Part of Preis-Verzeichnis über Apparate und Gerätschaften für alle Laboratoriums-Arbeiten im Gebiet der Biochemie [Price-List on Apparatuses and Equipment for All Laboratory Work in the Fields of Biochemistry]
    • 1913

    B 185. Combination water distillation unit with drying cabinet and sand bath for gas heating.

    Also pictured are evaporating flask and dishes made of glass and metal.