Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 188
Blankleys Revolving Mica-Selenite Stage. finger at the front edge of the stage; whilst the two Selenites are soplaced in a slide, that either of them can be brought under theaperture as desired. 112. Sivifts Combination Sub-Stage.—In this ingenious piece ofapparatus (Fig. 85) are combined the…
Microscopy · Biology
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