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A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures (1848)

Quekett, John, 1815-1861 · London, H. Bailliere · leaf 150

An illustration from A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures, 1848, leaf 150 — Fig. 62. bined. All the different methods of employing the two formsof condensers will be fully explained in the chapters devotedto the illumination of opaque and transparent objects. ACCESSORY INSTRUMENTS. 109 … Messrs. Powell and Lealand supply, with some of theirinstruments, a diaphragm of the form represented by fig. 63, which, when used,is adapted to thestand of the largecondensing lens,and is placed infront of the lamp atabout eight inchesdistant from themirror: it consistsof two plates ofthin sheet…

Microscopy

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