land.■J R. & J. Beck. Ltd., London, England.( W. und H. Seibert, Wetzlar, Germany.f E. Hartnack, Potsdam, Germany.I C. Reichert, Vienna, Austria,f Ross, Ltd., London, England.-J Verick (Stiassnie), Paris, France.( Carl Zeiss, Jena, Germany.J. Zentmayer, Philadelphia, Pa.( Dollond & Co.,… … 0.1S mm. 0.17 mm. 0.15 mm.0.15-0.18 mm. 0.15-0.20 mm. 0.12-0.17 mm.o. 10-0.15 mm.0.10-0.12 mm.0.10 mm. CH. I] MICROSCOPE AND ACCESSORIES 19 $35. Aperture of Objectives.—The angular aperture or angle of apertureof an objective is the angle contained, in each case, between the most diverging of the…
Microscopy
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