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 85
t, or if the ring be used, the lensmay drop into it. The coarse adjustmentis made by sliding the tube up or downFig. 28. the stem, whilst a finer adjustment issecured by means of the small arm and theball and socket joint; but it will be seen that if this last beused, and the arm be moved into any…
Microscopy
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