The microscope; an introduction to microscopic methods and to histology (1901)
Gage, Simon Henry, 1851-1944 · Ithaca, N.Y. Comstock publishing company · leaf 243
Fig. 187. Adjustable lens holder. This lens holder will take magnifiers ofvarious sizes, and from its adjustable mechanism is very convenient for dissecting\or for holding a Steinheil and other lenses for illumination ( The Bausch & LombOpt. Co.). … Fig. 188. Engraving glass toserve as a condenser and for a dis-secting lens. {Bausch & Lomb Opt.Co.) If one examines a series of photo-micrographs the chances are that the greaternumber will be of diatoms, plant sections or preparations of insects. That is, theyare of objects having sharp…
Microscopy
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