Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 66
in such a manner that the imagemay be formed of dimensions not too great for the whole of it tocome within the range of the eye-glass. As it thus allows more ofthe object to be seen at once, it has been called the field-glass • butit is now usually considered as belonging to the ocular end of… … IF Fig. 30.—Path of a ray of light through a modern combination of lenses for compound microscope. 42 VISION WITH THE COMPOUND MICKOSCOPE according to the purpose for which it may be required. That which,until the construction of the compensation eye-pieces by Abbe, wasconsidered the most…
Microscopy
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