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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 223

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 223 — so will the rays either be convergent, divergent, oreven parallel. Should it be required to illuminate a largeportion of an object for dissection or for other purposes, thenwe may have recourse to the following plan; the largecondenser must be placed near to the lamp, so that divergingrays given… … Fig. 115. three inches focus, and either supported on a separate foot,or else attached to the stage, or some other immoveable partof the stand of the microscope ; and should be so placed thatthe rays of light from the large condenser be thrown upon it.These rays being slightly convergent, and…

Microscopy

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