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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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Lhis Fermis also appropriacea le cerrain lons ( that is, the Side or Plane char lies parallel t0 2
Plates ar che, ends, and separared one from ano-
Areishe Line, thac mar be imagined to pals chro
the outward Conrex Poines ot che Pres, conti-
cher. Ther ate huns wich Cords over che nued ro a convenient Lensch. The W ord Sche.
Caces ot a P’oun ox Forrrels, and in case olSur-
nography is used by Lamy and Orhers in che
Prize, let Fail perpendicularly; by wrhich means Came Senle.
the Palsage is fopE, S0 chac che Pnemy CannOT
In Forrificarion, it is che Profilt ex Reprelenta-
calilr remore ox troist ux all che WVooden BarS tion of a Fortrels, made alter such a manner
richi a Lcarer, or any ocher Machine Pet under thac che L ensth, Breadch and Fleighe ot itssere-
hem: On Wrhich acconne chese Orgures are 10 ral Parrs mar be discorered.
be Dreterr d Betore PTerses Or Portcullices, becaule
ORTTIOORAPEITOAI. Projection of ehe
che Pieces Whereot the latlet consist are joind Sphere, is che drawins che Superticies oF che
rogecher; (0 EaC WHCH LH) ParE iS hunS Or Sphere on a Plane wrhich curceth ic in chemidale
hearec ux, che Wrhole Machine is likevise remo-che Lre beins placed ac an intinite Diltance ver
vecl. Phele, ersues therer are much berter rically to one oP the Femispheres; them 2 Rist
Line extended from che Ere to any atsigned
ORLE, is an Ordinary in Poine in the Surtace of thac Flemisphere, MaII
HTeraldry, almost of the Figure project che astigned Poine uxon the Plane; and
OE an Tnescocheon, onty ic is che Distance upon the Plane From the APCX, OE
roided, (0 thac che Field ap-
pears chrouxh. Thus: FCBIa-
rech Or, an Orle AZure, bY che
Name oF Bertram. Whenever
an Orte is Rovered, ic is called
top oE che Femisphere, ro che projected Point,
is equal eo the Sine oF che Art, From the Ver
rex oF the Tlemisphere ro che assigned Point.
the Radius beins che Semi-diamerer oF the
Sphere. This Projection is also called etic Ana-
Irsssure; and is chere berwo oE chem, a Dou- lemma, wrhich sec.
ble Tressure. 18.
Somerimes an Orle consitts oF three pieces one
vichin anocher. AIO if 2 Round ot Marilets,
ORTHOGONTAE, che same wvich Righe
ansled; and when reterred eo a Plain Figure.
supposes one L. es Or Side t0 Aand perpendicular
Cingueseils; Fscallop. sells, Xc. are placed abour ro che orher: And wrhen ic is spotcen ot Solids.
ans Ordinary, tis called an Orle OF Martler S, Cin-  ic suppoles cheir Axis ro be perpendicular to the
quesoils, ec.
ORLF, a Pem in Archirecture; che lame
vich Plinch, wehich sec.
Plane OF the FTOrizon.
ORTFIOPHOEA, is an ill Respiration, wohem
the Person affected cannor breaché bur ich his
ORLOPE, propert che Spare Deck in a Neck crect.
Sueat Ship, reachins trom the Main-mast ro che
O5, a Done, is an hard, der, and cold Sub
Missen; and in a Three Deckd Strip the Se- Aance, consistins especially ot carthy aud laline
cond and Lowest Deck are lomerimes called Or.  Parricles; wrtich Parrieles, Caith DE. Pavers, be-
lopes.
ins in cheir several Series united ac cheir fxrre
ORITAMENTS, in Archirecture, are che mities, Form Scrinss; and chole Scrines unired,
Architraves, Frizes, and Cornices of che sereral
malce distinct Plares, wtrich lins ore above
Orders. Bur chere are also mans Ornaments anocher, consticure che wrhole Thicknets oE rhe
Frequenels carved in che Mouldinss, and on all
Ocher Members; a5 divers (Orrs Ot Leaves, Cha-
nellines, WVreaths, Ovals, Chapelets, Tresces, Fe-
Bonc.
The Bones in an Human Body, are designec
For the upholdins of the Body, to rendex ils
scohs, Flovers, Roses, XC. The Ornaments oF Morion calie, and for a Fence tor sereral Parts.
the Columns che French caIl Oeufs.
Some makeche umber ot rhe Bones 10 be 249.
ORNTTHOLOOT, is a Deleription oF che orhers commonly 304, and orhers 25 many 25
Sereral Nacures and Rinds oF Birds.
the DarsoF the Zear; Vecthe Number oF chem
OROBOIDES, is a subsidins in Vrine, lile is uncerrain, because che Bones oE Intans disser
20 a kind of Pulse called Verches. Blanchard.
From chose sF AdulE PeronS; aIlo, because the
ORTETC, a Term in Forritication; che lame Bones called Sesamoidea, (sec them in their prO-
vich Berme, Which lec.
ORTLIODROMIODES, is che ANE OF Pail.
ins in the Ark oF some great Circle: For the
ACK OF every great Circle is opdosesuia, the MOrE
est, Araicest Distance Betreen any truo Points
on the Surtace ot the GlobC.
ORTHIOGRAPCTS, in Crammar, is vririns
and spellins any Languase crulr, accordins 10
s just Frrmologies and Proprieties.
ORTFOOLALLLL, s Malhematicts, iS che
trie Delineation oF ttie fore rishe Plain OF any
Object.
In Architecture, ris raken For the Model, Plar-
Form, and Delinearion oF the Frone ot a FToule
Per Place) and the Tcerh, are noc decermined
to a certain Number in Old Men and AdulePer.
TOnS. They are of different Strapes; Tome are
round, others plain, acure, obcule, hollon
sponor, solid, oblong, triangular, (9C. IF vou
vould sind any particular Bone, sec the WVora
thar distinguistes ic; 25, For Os frontis, OE Coro-
nale, Sec Frontis Os, Ot Coronale.
OSCaleis. Sec Calcaneus.
OSCTLLALION. IE a Bal BC hUMS al lC
end ot a Srrins or Wire, and chac Wire or Scrins
hans on a Pin Fastened abore, (0 chac che BaII
mar sivins or play Freely on that Pin, it is callec
a Pendulum, and’che Pin is che Centre of Suspen
charis eo be built and contrired accordins eo che sion: Bur il rou imasine che Pin to be che C en
Rules oF Crcomety; accordins to which Pac- rre oF a Circle, whole Circumterence Mall di-
rern, che wllose cabrick is crected and HMHICU.
ride the BaHI ox Bob into trvo equal ParES, chC
In Perspective, the Orhography oF any Body, middle Point or the Ark, (0 dividins che Ball, id
or Buildins; is che locerietic side ot anr Plane; calted ihe Contre os Oseilation. He che 60b le
and chick pieces ot Pimber, aem d vith Tron
ortcullices.
han i