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 37
d differs only from Roberts in having acentral black stop on the plane side instead of a concavity(Fig. 13). A still greater degree of obliquity suitable forhigh powers must be sought by the use of the parabolicilluminator (Fig. 14). This is usually a paraboloid of glass,which reflects to a focus… … Bulls-eye Condenser. so that microscopists resort to concentrated lamplight, etc.Gas, paraffine, and camphene lamps, have been variouslymodified for this purpose, but few are better than the Ger- MICKOSCOPIC ACCESSORIES. 37 man students Argand lamp for petroleum or keroseneoil, as it is called. To…
Microscopy · Histology · Microorganisms
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