Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 171
fication of two hundred times Selliqucs wasdecidedly superior; but beyond that magnification there was nosuperiority in the achromatic form, and In- preferred Adamsl formfor prolonged observations because it gave a larger field thanSelliques. The mechanism of this microscope was similar to the… … Fig. 111.—Selliques achromatic microscope I ls-J:!-l Des MicroscojJes, Paris, lbiil), p. 86 MODEL STANDS FOR ACHROMATIC OR.JECTJVKS within the body-tube, C, the upper one having a biconcave lens, S,at the lower end, serving as an amplifier, which was probably the firstapplication of a Barlow lens…
Microscopy
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