Beale, Lionel S. (Lionel Smith), 1828-1906 · London, Harrison · leaf 80
§!ii!. Fig. 53. ^> c ^ —/, V- - ^^11 \ X \ » \, … ;§ 41, 44, 45, 63. rig. 56. To illustrate tlie mode of examining an object by reflected liglit with tlie Lieberluhn.The light rfiiected from tiie mirror, tt, passes througli the glass slide, 6, around the object,and impinges on the concave annular mirror, d, by which the rays are brought to a…
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