Note i — BOOK IX.
Reading edition
A protuberant Eye would have been inconvenient for Fishes, by hindring their Motion in so dense a Medium as Water is; or else their brushing through so thick a Medium would have been apt to wear, and prejudice their Eyes; therefore their Cornea is flat. To make amends for which, as also for the Refraction of Water, different from that of the Air, the wise Contriver of the Eye, hath made the Crystalline spherical in Fishes, which in Animals, living in the Air, is lenticular, and more flat.