Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 184
during the last ten Fig. 121— Koss-Jackson model, years it has been ap-plied to some of the most imposing and expensive instruments madein England and America on what is known as the Jackson model.This model has one supreme virtue, in the possession of a solid limb.This may take many distinct… … l6o THE HISTORY AND EVOLUTION OF THE MICROSCOPE adjustment, is in one solid piece. If nothing were sacrificed thiswould be a boon. Formerly, this model was supplied with a fineadjustment which only moved the nose-piece, but on a principlewhich we shall see was wrong, and from its imperfections it…
Microscopy
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