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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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Fahination DE DT. Burnet ~TBeOry D) ihe F. artIS)
10 DC 65490506 Square Mliles; and MMCFCtOTC
Cuppolns the Deprh ot rhe Ocean Commnibus
Locis 1o bc : oF a Mile, thc Ouancier ot Nale
in the Whole i5 21372626: Cubick Miles. 
AOCFITHODES, are VIcers Wrhole eS ar
CalIOUS, OF OE the NTature OF WV arES, BIC HOEMa
lignane. Blancherd.
OOTAOON, in Ceometry, is a Figure or elst
Sides and Angles. And chis, When aIl che Sides
and Arsles are equal, is called a Regular Oetc
son; O Wrhich mas be Inscribed in a Circle.
R O POSIY YO N.
The Side of such a Regular Octaron (B2) is equa
in Pover r0 Bals the Side of the Square 
and to the Difference betoeen that bals side 
che Radius b p, calien boch 1ogethes.
DEMONSTRATTON.
That b a 1 = = b p D -) p a 1 is Plat
FrOMI The 47 eE Cuclid.
Allcheretore chac is wantins to be proved,
ZhaE b P 15 the Disterence betwween the halE sdo
OE the Sgnare and the Radius; WHCh ill B
very crident wnen ron consider chac p c must D
equalto p a because the Angle a and c beir
boch Semirighe, must be Rqual.
another.
 ut
ThC Octahedron is ro Prramids put rogerhier
at cheir Bales, cheretore irs Solidier is obcained
by Mulciplyins the Guadrangular Base oF cirter
(here ther are boch joyned cogether in che mid.
dle of rhe Fisure) by onc chird oF che Perpendi
cular heishr oE onc oEchem, and chen doublins
the Produet.
OOTAVE, OF Fichth in Musick, is an InTer-
val ot Lishr Sounds; everr Figheh Nore in the
Scale oF the Cam ut, beins che lame as tar asthie
Compass of Musick requires. Tho an Flumane
Voice can reach only ro chree ot thele Octaves
buc che Tones OF che Organ 50 25 Far 25
FiohE.
OETO Tales. Sec Tales.
OCVLOS, in Bocany, signities che lame vich.
Cemma, ora Budd oF a Free, Or a2Y PlanE.
OCOTOS, che Fre, isthe external Organ et
the sistue; it is compounded ot six Muscles, 10
wic, ot uuo direet, and as mans Tranlverse
ones; co wtich a lerenth is added in Brutes. V
has seren Tunicts, ihe Adnata, Innominata
Cornea, Dvec, Retiformis, Chrystallina, and Vi-
trea. Ichas allo che Opticte Nerve, ihre Tris, ane
the Pupilla. Sec chem insly in cheir proper
Places. Blanchard.
Fioir Vision or Sistr is made inthe Ere. Sec
Vision, and Fyc.
OCTOSTVLE, in archirecture, is the Face ot
an Fditice adorned wich Fighe Columns.
OEDLDROM Motores, a pair ot Nerves 2
risins tromthe Medulla oblonsata, on cach side ot
the infundibulum, andharins che caroridat Arte
ries lying berween chem: From chence paltins
thro che Foramina Lacera OF theOs Sphaenoides
cher sire a Branch, Wrhich wich a Branch oF the
Atch Pair, forms a considerable Plexus, wrtricti
Cends out sereral Lwiss thacembrace rhe Opticte
Nerve, andare (pent on the Tunicles ofchelre;
ther sive a Branch ro the Muscles called AtrOI-
lens, Deprimens, and Obliquus Minor.
ODALISMOS is che irchins oE che Cums
When Children breed Pceth. Blanchard.
ODONTALCIA, che Tooch. ach
ODONTOIDES, chac which is like a Tooch
25 che Looth ot rhe second Vertebre, and oF O
cher Bones. Blanchard.
ODOR, by chis Word che Anciens dict sis
nisie Cometimes che sense of Smelline; buc nou
tis generally and more properly uled For chose
aoreeable or dilagrecable PMuria, wrhich are c
micced by many Bodies which are called Odo-
rous, and which excire in us the Sentarion et
Smelline.
ODGDRS. That Odours depend very muct
on the Pexture oF Odorous Bodies, is plain From
this Experiment, char chac rery Odorous Body
Camphire, Wwhen dissolved in and minsled victe
OrIoF Virriol, Will in a manner quire lole ils
Scent; bur as foon as ever a licrle WV acer is pou-
red inco che Solurion, che proper Odour ot che
Camphire will be restored, and distuled 2II a-
round.
Sence, by Llippocrates, LoF alis Lunoul; bur
ArictIy, For a Wtice, Potc, insensible Pumour
proceedins From picuirous Marter heaped up to-
secher. IE has no Pulle, and rields casils to
the Fingers: Ic mas proceed likewise in lome
meatire trom che Lymphia, or Purricions suice
exeea
OEDEMA, is Somerimes catcen in a larsa
DCTANT, OF OCTILE, in astronomy, lE
nitres a Planets, Coc. beins in such a Apeet O
POhtiOn EO anocher, chat cheir Paces atHer OnL
an cietrch pare ot a Circte, or 43 cs. d b
OTAHEDRON. Sec RSa bu
The sollomine Fieure beine draon on Past-boare
hals cur chro, and them soldea lx, Wel 1es
sent au Octatiedron.