e diaphragms so that 58 LIGHTING AND FOCUSING [CN. II very oblique light may be used, employ a stage micrometer inwhich the lines have been filled with graphite, use a 16 mm.- -.; in.) objective, and when the light is sufficiently oblique thelines will appear something like streaks of silver on a… … Fig. 58. Abbe Condenser of 1.20 Fig. 59. Abbe Condenser of 1.40 N.A. in section. N.A. in section. Cuts loaned by Voigtliuider &So/vi, A.G.- with the annular opening (Fig. 57); employ the same objective asin (A). For object place a drop of 10 % solution of salicylic acidin 95 % alcohol on the…
Microscopy
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