Edmund Hartnack’s water immersion objectives Nos. 9 and 10, 1867-70s
Stock Number: FG_21035
A complete set of Edmund Hartnack's highly esteemed and expensive (at that time) water immersion objectives Nos. 9 and 10 with their original canisters.
Countries of manufacture
In 1859, Edmund Hartnack first exhibited his water immersion objectives. He also added the correction collar to the water-immersion lens for the first time. Hartnack sold 400 of these lenses over the course of the next five years. In 1862, Hartnack displayed his immersion objectives at the London, International Exhibition. That same year Prazmowski joined Hartnack (in his Paris workshop), together they made substantial progress in the water immersion objectives, thanks to Prazmowski’s combination of theory and practical skills. At the 1867 PARIS Exposition, Hartnack exhibited his improved water immersion objectives. The result was that at this event, Hartnack’s lenses were judged the best (Mayall Cantor Lectures: 1119). The exhibit of Hartnack & Prazmowski surpassed all other entries for his new immersion lenses. That year, Hartnack produced a water-immersion objective of 1/12 inch (No.9) & 1/16 inch (No.10). These two lenses are represented here.
In 1847 Charles Darwin acquired a “Large no.1” Smith & Beck compound microscope, probably the most advanced instrument of those times, to be used in the classification of barnacles. On March 1st, 1874, being aware of the newly developed water immersion objectives by Hartnack, he wrote to Hartnack to order one of those objectives, whose performance he later praised a lot in a letter to his son Francis.
This is a unique opportunity to have the two objectives (Nos. 9 and 10) in excellent condition.
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Gilgamesh was the mythological hero of the cultures of ancient West Asia, who set out on a journey in which he sought youth and eternal life.
Fleaglass Gilgamesh is located in Israel. As an archaeologist researching the material culture of the distant past and using the microscope as a major research tool, for more than two decades I have collected microscopes from the first 300 years of existence of this amazing tool and researched the cultural context of their use. Passion has become an obsession and I cultivate the full and almost unique West Asian collection of historical microscopes. Respectively, I put up for sale surplus or interesting items from the collection. I would be happy to advise any interested collector free of charge. Needless to say, I would love to send photos, information and bibliographic references, and discuss the sale details of the items offered here for sale.