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 142
ondenser;and although it is applied in different ways to the microscopesof our three eminent makers, it, nevertheless, consists of threeessential parts; viz. an achromatic combination, an adjustmentof focus for the same, and a means of making the axes of theobject-glass and of the condenser… … e m Fig. 51. it consists of two tubes,sliding one within the other,to the outer one b, is at-tached a flat plate «, whichslides underneath the stage,and is adjusted for distanceby the screw f; at c is seena milled head, which is con-nected to a pinion, and bymeans of a rack attached,the inner tube,…
Microscopy
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