Du diagnostic des maladies des yeux par la chromatoscopie rétinienne : précédé d'une étude sur les lois physiques et physiologiques des couleurs / par X. Galezowski
An 1868 Paris ophthalmology treatise by Xavier Galezowski, held by University College London, on diagnosing eye disease through retinal colour testing and the physics of colour for physicians and students. Its pictures are plain black-line optical diagrams: prisms refracting converging ray bundles to lettered points, and a curved arc of hatched segments radiating lines to labelled points, useful for a designer seeking clean schematic light-path linework.
