The microscopist : a manual of microscopy and compendium of the microscopic science : micro-minerology, micro-chemistry, biology, histology, and pathological histology (1877)
Wythe, J. H. (Joseph Henry), 1822-1901 · Philadelphia : Lindsay & Blakiston · leaf 38
centrate the light from such asource a condensing lens is used, either attached to themicroscope or mounted on a separate stand. Sometimesa hulVs-eye condenser is used for more etiective illumination(Fig. 15). This is a large plano-convex lens of short focus,mounted on a stand. For such a lens the… … Parabolic Sppcuhim. ing rays of a lamp parallel, the plane side should be nextthe lamp, and rather close to it. The use of this con-denser will also commend itself, when used as last referredto, in microscopic dissection. It will throw a bright lightfrom the lamp directly on the trough,…
Microscopy · Histology · Microorganisms
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