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  • Optics: colour scales for violet and yellow. Colour mezzotint [?] by R.H. Digeon, ca. 1868, after J. Silbermann.
  • Optics: three kinds of simple microscope. Engraving.
  • Optics: a telescopic microscope, and hand-lenses. Aquatint, 1787 [by R. Laurie after Milne ?].
  • Optics: a micrometer, for range-finding [?], with diagrams of its operation. Engraving by Barlow.
  • Optics: a soap bubble exhibiting interference colours. Colour mezzotint (?) by M. Rapine, c. 1883, after B. Desgoffe.
  • A woman drawing at a desk; representing optics. Engraving by M. Dossier after G. Allou.
  • William Kitchiner. Mezzotint by C. Turner, 1827, after himself.
  • Painting personified with its ancillary arts and sciences: optics, chemistry and mineralogy. Engraving by P.C. Baquoy, 1809, after J.M. Moreau.
  • Optics: interference phenomena, exhibited by diffraction gratings. Coloured mezzotint by M. Rapine [1883], after B. Desgoffe.