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Physico-theology

Note b — BOOK IV.

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It is a good Reason Frier Bacon assigns for the Sphæricity of the Eye: Nam si esset planæ figuræ, species rei majoris oculo non posset cadere perpendiculariter super eum——Cùm ergò Oculus videt magna corpora, ut ferè quartam cœli uno aspectu, manifestum est, quòd non potest esse planæ figuræ, nec alicujus nisi sphæricæ, quoniam super sphæram parvam possunt cadere perpendiculares infinitæ, quæ à magno corpore veniunt, & tendunt in centrum Sphæræ: Et sic magnum corpus potest ab oculo parvo videri. For the Demonstration of which he hath given us a Figure. Rog. Bacon. Perspect. Distinct. 4. Cap. 4.

Dr. Briggs saith, Pars antica, (sive Cornea,) convexior est posticâ: hâc enim ratione radii meliùs in pupillam detorquentur, & Oculi fundus ex altarâ parte in majorem (propter imagines rerum ibidem delineandos) expanditur. Ibid. §. 2.

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