The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . he retina itself. A small por-tion of the ciliary muscle isshown, together with some ofthe ciliary nerves which con-duct the vital electricity to it,and by causing it to contract,influence the shape of the crys-talline lens itself, which is amatter of immense importance,as we shall soon see. Theextra bulge
The principles of light and color: including among other things the harmonic laws of the universe, the etherio-atomic philosophy of force, chromo chemistry, chromo therapeutics, and the general philosophy of the fine forces, together with numerous discoveries and practical applications .. . he retina itself. A small por-tion of the ciliary muscle isshown, together with some ofthe ciliary nerves which con-duct the vital electricity to it,and by causing it to contract,influence the shape of the crys-talline lens itself, which is amatter of immense importance,as we shall soon see. Theextra bulge of the eye con-stituting the iris and pupil isFig. 1997 The Choroid and iris enlarged. represented in the cut. Theblack pigment which abounds in the choroid of all ordinaryeyes is absent in the eyes of albinos and rabbits, and hence theirreddish appearance as the unconcealed blood of the capillariesof the choroid and iris thus become visible. 5. Refractive Media. The cornea, aqueous humor, crystal-line lens and vitreous humor constitute the refractive media ofthe eye. If the habits of life are gross, with too much rich andgreasy food, tobacco and stimulus, and too little exercise, air andsunlight, these media frequently become clouded and impure,and the vision consequently GENERAL MACHINERY OF THE EVE. 537 6. The Color of the Eyes which is manifested in the iris, isnever absolutely blue or black, as it is generally called, but ratherblue-gray, dark, or dark gray, etc. This color sometimes formsa chemical affinity with the general system; thus a system inwhich the warm red principle is predominant, giving red orlight colored hair and rubicund complexion will usually have abluish cast of eyes. In such temperaments the arterial bloodis rather active. In the case of brunettes, however, in which thedark principle rules more in the hair and complexion, the eyesusually carry out an analogical harmony with the body, and aredark also. 7. Adjustment to Distance. In a cameraobs
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectcolor, booksubjectpho
