Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 354
creen, the iris, Which is annular FlG 230._SectioB of the human eye. in form, and gives color to the eye. The opening in the iris is known as the pupil.Under the influence of strong light the iris contracts, andthe pupil becomes very small, so as to shut out as muchlight as necessary. In the dark,… … 332 PHYSICS a jellylike substance, the vitreous humor. The innermostlining of the eyeball is the retina, formed by an extensionof the optic nerve leading directly to the brain. Betweenthe retina and the sclerotic coat is a black pigment, thechoroid coat. In its operation the eye is quite similar to…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
