The microscope; an introduction to microscopic methods and to histology (1899)
Gage, Simon Henry, 1851-1944 · Ithaca, N. Y., Comstock publishing company · leaf 219
ark to indicate the plane to whichthe focusing glass should be adjusted. 1 2 X the ground side of the focusing screen. If the uncovered part of thefocusing screen is too opaque, rub some fine oil on it ; only a little 19 PHO TO-MICROGRA PH Y. \CH. VIII. should be used. The focusing screen as thus… … Fig. 151. Peri^raphic Objective of about go millimeters equivalent focus formaking photo-micrographs at a magnification of 2 to 75 diameters. It was foundto give the best results zvhen used right end to as in ordinary photography. (Fromthe Gundlach Optical Co.) FIG. 152. Zeiss Anas-tig mat…
Microscopy -- Technique
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