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 .. . ve only a general outline of thesubject, in which I shall aim to embody some useful hints andto clear up what I deem to be a radical misapprehension amongscientists, with reference to the general philosophy of vision. 2. Some of the Leading Parts of the Eye may be seen infig. 197, and are as follows : 1, th
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 .. . ve only a general outline of thesubject, in which I shall aim to embody some useful hints andto clear up what I deem to be a radical misapprehension amongscientists, with reference to the general philosophy of vision. 2. Some of the Leading Parts of the Eye may be seen infig. 197, and are as follows : 1, the cornea, a hard transparent coat in front ofthe eye and reach-ing about onesixth of the cir-cumference of thewhole eye. It hasbeen compared toa watch crystal,with each endmerging into thesclerotic coat ofFig. 107. The Eye. the eye. 2,the/m or colored portion surrounded by the white of the eye. This hasa hole in the middle called ihepupi/, through which light passes tothe inner portion, and consists of a great number of radiatingmuscular fibres which contract and expand so as to make the pupilincrease or diminish in size in proportion as the light becomes toofeeble or too intense. 3, is the aqueous humor of the anteriorchamber, back of each end of which is the posterior chamber, oc-. GENERAL MACHINERY OF THE EYE. 535 cupying the triangular space. 4, the Crystalline Lens enclosedin its capsule, and being more convex on the posterior than on theanterior side. This beautiful lens is very elastic, and being moredense than the aqueous humor in front, or the vitreous humor be-hind, has greater refracting power than they, and performs an im-portant office in helping to concentrate the rays of the externalworld to a focus on the retina ; 5, is a circular sinus called theCanal of Font ana ; 6, Canal of Pettit; 7, the ciliary processes arefolds, 60 or 70 in number, of the front margin of the choroid coatand terminating externally in the iris ; 8, the ciliary muscle is acircular band of u
Size: 1969px × 1270px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectcolor, booksubjectpho
