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 274
r screwinginto the tube g which fits into the tubular body of the micro-scope. If the crystal is large, and no maynifying power re-quired, this eye-piece may be dispensed with; a single lens oflong focus may occasionally be substituted with advantage.The vernier has a clamping screw at i and an… … Fig. 145. section of the same. The crystal may either be attached byCanada balsam or wax to a glass, or blackened ivory plate /dropping into the ring m, which again fits into the ring n, orthe crystal may be conveniently held by the clamping armsin fig. 147, attached to a ring, also fitting into…
Microscopy
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