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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
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stance only, by which ercey Body, 25 much as it ene et Parrs of the Medium) moves che Fyc just
may, endearours ro continue in rhar Scare in which atrer che lame manner as he Objectis supposed ee
ic is; cichex oE Rest, or Morion, uniformly for.  have determin d ic; wtich Morion, is continued
ward in a riphr Linc. This is alivars proporriona along rhie Optick Nerre, ux inro che Brain, Where
ble cothe Body or Mass which ic is in, and disters ir moves che Conarion or Clandula Pinealis, viet
nochins trom the Inactivirr ot che Matrer Ox BodY,
bue onty in che manner ot Conceirinq ic: And
cheretore chis vis insita, may most properly becalld, co judge decordinely.
Vis Mertiae. Nemt. Princip. Math.
VIS Morrix, is the Poiver wrhich produces the
Morion ot any Body trom Place to Flace: Thus
Gravier is a vis Morrix donnivards, or comards
che Cenrer oFche Farrti.
VISCERA, are ehe Boels contained in chechree
srear Caviries oF che Body, a5 che Anaromists ca
The. They are called also Exra and Inter-
ranea
VISIBLE HoriZoN. Sec HorizOn.
VISIBL E PLace OF a STAT. Sec Apparent Place.
VISIBLE Species. Sce Species Visibiles
VISION, is a Senlation in che Brain, proceed.
ins trom a due and rarions Morion oF che Oprick
Verre, produced in che bocom of che Fye, b
the Rars oF Lighie comins trom any Object; by
erhich means, che soul perceires che illuminared
Thins, togecher wich iis Ouantirs, Oualirs, arid
Modisicarion.
Whecher chePicture ottheobject be made on the
Tunica Retina, Or on the Choroides, there is a great
Dispure between MIr. Pecquet and MIP. Mariotre, in
thc Philos. Frans. N. 59, EC.
AS to the manner hou ehis noble sense oF Seeine
is produced, chere vere many Fyporheles amOnB
che AncientS.
P. The Stoichs imasined, Fhar certain visuat
Rays evene from che Brain chrough che Oprick
Nerre and Rre, and From chence ro the Object;
and chere (just like a Blind MIanS STaH) Feet out
che Figure, Colour, and Dimensions ot che Ob.
ject.
2. The Pythacoreans thouxHE, ThaE there WenE
lome rilual Species our of che Eye o the Object,
Wrhrich evere immediacels reRected back again from
chence roche Ere, and (o produced Vision.
3. Plato Supposed, Thac boch From the Fye arel
the Object, chere eame substantial FMuria, Wtict
mectine halt ay, and encouncerins che Ocular
Fsuria, che lacrer vere beat back again ro the Fye.
and chere communicaredche Imprection ther had
received trom thole FMuria which came Trom the
Object; and s0 caused thesense oF Sceins.
1. Aristorle alserred, That the Colours oF all Ob-
jects did move che cransparene Medium, a5 char
did che Fre, and chereby communicate cheir Ima-
Ses corhe Brain, Or commune sensorium.
S. Epicurus, judiciousr rejectine che Norion OF
any Fimanation of visible Species trom che Fye;
and noc chinkins che action oF che incermediare
Air or Medium Cufficiene to acconne For Vision
righels concluded, Thar chesense ot Vision aspro-
duced by a substantial mareriat EMux From the
Object 1o the Cyc.
6. Carrez, suppoles Vilion pertormed by barc
Morion only; richour any macerial Emanation
rom che Obiect; buc onts, chac chc Listr (itich ive may conceire che Cryltalline tumouc BB, 20
VIS Insita Mareriae, is the bate LOet Ot HC  s also is nor a BOdy, buE the MOriON OE
him, che Seac oF che Soul; and by chat mealts.
Produces incernal Senlarion, and enables te soul
The manner of Vision with ihe nabed Eye, accordine
eo Mr. Molyneux his Explication os it, in Diope
NOr. p. 103.
Suppole abc an Object, i ke le m the Globe ot
ihe Lye, Furnisted wich all ies Coars and Llumours
buchere che Crystalline Hlumour s oh is onty ex
Pelsd, 25 beins principally concernd in Formins
the imase on the Lund ofche Liyc.
r. From cach Point of the Object, we may con-
ceive Rays Rowins co the Pupil ofthe Rye i K; 2d
here from che midale Point b, chere proceed che
RaYSb5, b0, bh; thele, by means oF the COatS
and Flumours of the Eye, and especially by ihic
Crrstalline Hlumour sB, are retracte d and brouehe
Cogether on the Rerina or Fund of che Rire in che
Poine e, and there the Point b is Represenced. For