Elementary treatise on physics experimental and applied for the use of colleges and schools (1890)
Ganot, A. (Adolphe), 1804-1887, Atkinson, E. (Edmund) · New York : W. Wood · leaf 605
and pressure. Iris.—The iris, d, is an annular, opaque diaphragm, placed between thecornea and the crystalline lens. It constitutes the coloured part of the eye,and is perforated by an aperture called the pupil, which in man is circular … 588 On Light. [612- In some animals, especially those belonging to the genus Fclis, it is narrowand elongated in a vertical direction ; in the ruminants it is elongated in atransverse direction. It contains a large number of muscular fibres, whichare disposed partly as a narrow ring close to the…
Physics
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