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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 170

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 170 — ACCESSORY INSTRUMENTS. 129 … same time the pencil and the image; to facilitate this in somemeasure, Mr. Ross places either one or two lenses below theprism, in order that the rays from the paper and pencil maydiverge at the same angle as those received from the prism,whereby both object and pencil may be seen with the…

Microscopy

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