Beale, Lionel S. (Lionel Smith), 1828-1906 · London, Harrison · leaf 106
rization. A shorter body for other optical examinations replaces theordinary one ; this is fitted with a tourmaline T, and a cell for aplate of calc spar C, when the instrument is to be used as amodification of Professor Kobells stauroscope for determiningcrystal systems; and two lenses L L with a… … PLATE }(X.Pig. 69.
Microscopy
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