’ CG ’ 
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. Ae yo . . ew) 
* . a ; eee.’ ts ae “. 7 
. y 7. 
Natural Hifloys 
set iene 
2 
| 
itronger. Foryou may {ce, by looking ina Glats, that when you {hur one 
Eye, the Pupilof the other Eye, thatisopen, dilaresh. co 
Toe Eyes, if the fightmeer nor in one Angie, feethings double. The 
| canfeis, for that (ecing two things, and (eeing one thingtwice, worke h the 
fame effee&t: And therefore alittle Peller, held berween two F.ngers, laid a} 
39 
XN 
— 
crofs,feemethdouble. ong 
Pore-blind Men, fee beft in the dimmerlight; and likewife have their] 
fight ftronger néar hand, thanthofe that are not Poreblind, and can read 
and write {maller Letters. The caufeis, for that the Spirits V.fual, in thofe| 
| that are Poreblind, are thinner and rarer, than indtherss and therefore the) 
| greater light difperfeth them. For the fame canfz they need contracting 5] 
| but being contraéted; are more {trong than the Vilual Spigits of ordinary eyes | 
are; as when we fee thorowaLeveél, the fight isthe ftronger: And fois ir, | 
| when you gather the Eye-lids fomewhat clofe: And itis commonly feenin | 
| thofe that are Poreblind, that they do much gather the eye-lids together, | 
But old Men, when they would fee toread, put the Paper fomewhat a far off, | 
The caufe is, for that old Mens Spirits Viiual; contrary to thofe of Pore: | 
blind Men unite nor, but when the obje& is atfome good diftance from cheir} 
ry 
co 
Ni 
to) 
Eyes. ¢ ae 
i Men fee better when their Eyes ate ovet-againft the Sun or aCandle, if | 
they put their Hand a little before their Eye. The Reafonis, for thatthe | 
Glaring of the Sun, or the Candle, doth weaken the Eye ; whereas the Light } 2 
circumfufed is enough for the Perception. For we fee, that an over-lieht | . 
maketh the Eyes dazel, infomuch as perpétual looking againft che Suny} 
would eaufe Blindnefs. Again, if Men come our ofa ercat light, into a} 
dark room; and contrariwife, if they come out of a darkroom intoalght | 
room, they feem to havea Mift before their Eyes, and fee worfe than they | 
fhall doafter they have ftaid alittle while, either in the light, or in che dark, | 
The caufe is, for that the Spirits Vifual, are upon a fudden change difturbed, | 
| and put out of order; and till rhey be recollected, do not perform their | 
| Fun@ion well. For when they are much dilated by light, they cannot con-} 
tract fuddenly; and whenthey are much contracted by darknefs; they cannot} 
i dilate fuddenly. And excefs of both thefe, (chatis, of the Dilatation, and} 
! Contraétion of the Spirits Vifual) if it be long, deftroyeth the Eye. For as] 
| long looking againft the Sun, or Fire, hurteth the Eyeby Dilatation, fo ct 
| ous painting in {mall Volumes, and reading of fmall Letters, do hurt theEye| 
by contraétion. i} Tees | 
lt hath been obferved, that in Anger the Eyes wax red; and in Blufh-| 
ing, not the Eyes, butthe Eats, and the parts behind them. | The canieis, for | | 
that in Anger, the Spitits alcend and wax eager; which is moft eafily feenin} 
| the Eyes, becaufe they are tranflucide, though withal it maketh. both the 
Checks, andthe Gils red; butin Blufhing, it is true, the Spirits afcendlike- 
wife to fuccor, both the Eyes and the Face, which are the parts that labors 
But when they are repulfed by the Eyes, for that rhe Eyes, in {liame do ut 
back the Spirits that afcend to them, as unwilling tolook abroad: Fort 
Man; inthat paffion, doth look ftrongly, but dejectedly , and that repulfion 
from the Eyes, diverteth the Spirits and heat more tothe Ears, and the parts 
by thems) 2it 269 3of OFS ban” 2oTeMwIHO SvOi i Ties eae 
The abjeés of the Sight, may caufe a great pleafure and delight i 
Spirits, but nopain or great offence; except itbeby Memory, as ha 
faid, The Glimpfesand Beams of Diamonds that ftrike the Eye, -/ 
thers, that have glorious colours, the coming inte 4 fair Garden, the ¢ 
4 ia 
ee = a Se ee Seer — a i 
