Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 592
s-patched to the brain by the optic nerve.Now the retina itself has the power ofadapting itself to light and darkness ina wonderful manner. Besides this, thepupil aperture of the eye acts as a safe-guard, opening to its fullest extent in comparative darkness so as to let in as Fic. i.-Diagrammatic…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
