Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 248
hich are closed by plates o€cover-glass, leaving the upper end open. It is thus possible to observean organism upon either of the two thin sides with an objective gi\ in ga linear amplification of 200 to 300. To screen off the superfluous lighland the numerous reflexions in the aquarium, the frame… … Fig. 171.—Collinss aquarium microscope, applied to the aquarium by a sucker. opening in one of the divisions. In this opening a thin plate slides.,and can be clamped at any point. In this plate again is a circularaperture, which can be closed to a greater or less extent by variousdiaphragms kept in…
Microscopy
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