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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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Fescopes may be made irh Concare Lye:) Nixcure chat ivould Polis sinely; rellect rividly;
slalses, buc then ehe Area oF the Object, will be
proporrioned alvars ro che Breadch oF che Pupil
OF ihe Fre oF etie beholder; Whereas in a Convex
Ereglass, tis determined by che breadch oE chat
Gla(5.
The practical Rule for combinins; or purtins 1080.
ther, this Day- Felescope os four Classes, is this.
Take the EO Frst Eve- Stases, and combine
hem by Trials, (0 2s eo matce a distinct inverred
Telescope, consistins ot a Conrex object class, and
a Conrex cye-glals oF a lels Sphere.
Then take ihe Object slals, and sirst Lyc. Blats,
and combine them by Frials als0.
Castir, Fatre borhrhese Telescopes, and wirtour
alcerine che Distances oF cheir Glasses, in either ot
them snsly; by Trials combine boch chese Lelc-
scopes, tillche Aprcarance be clcat and distinet.
BucWrtrac is hère done by Trials, may be efect
ed by actual Menluxarion, eP desingins ouE the
Distances ot che Classes trom cach orter, by
Hnoine their Focal Diltances.
TELESCOPE Aeriat, (OMIF. Cbr. FTugens CalIS 2
Telelcope, (described in Phil. Frans. Numb. 161.)
Wtich ivas made for the Niste, and ro be used
and hold ichour rustins or carnistrins, ic oild be
a Dilcorerr oF very ereac Adrantase; boch 10 Tc.
lescopical and Microlcopical Improrements.
visible corhe naked Lre, bul aloretacte ) 
et ChC aDe san. ettenma aco at la 
Resty beginnine, trom pare ot the Os trontis, Syn
cipitis, Sphaenoides, and Temporalis; From chese
Placesies Fibres pals (likre Lines dravn froma Cir-
cumference ro a Cencer) undet elees fusau, on
Wtence allo ariles lome Hethy Fibres JoiM Wi
the Former ar cheir uniced, Paless celtuous, anc
partly Aechr Insertion, toche upper part Ot ihC Pro-
cessus Coronae ofthe lover Taw: This, with its Parr.
ner, drans che lorver Parr uxivards.
TEMPORAROM Ossa are BOneS OF the ScuII
Ciruared in the lorver part otche sides olche Cranium;
cheir upper part, wrtrich is chin, consisting onty ol
one Table, is oF a circular Figure, and is joined co
ehic Ossa Parietalia by che Sururae squamosae their
lorver pare, wtich is chick, hard, and unequal, 18
joined ro che OsOccipiris, and toche Os Sphaenoides,
etiis pare is called Os Petrosum; they, trave cactu
Withour a close Tube, (because there is no necd of chree exrernal Apophises or Procelles. viz. Processu
one in a dark NVishr) and by chacmeans a lons Te-
lescope becomes much Liehirened; and more casitys
Manageable.
Zysometicus, Nlammillaris or Mastoideus, and che
Processus Scylyformis, and one Incernal. Intherem
poral Bones, there are 2 Incernal, and a externat
TELESCOPE Restecting; oF Mr. Nemron, is made Tloles. The tirtt ot the Incernal, IS LHC LIOIC CMNO
thus: The Tube ot ic which is larse, is Open AE
the end wtrich respects che Object; che octiex end
is close, irhere à concare metalline speculum is
laid; and near che open end, there is à Aac Oval
Speculum made a5 lmall a5 mar bc, the lels e0 ob-
Wtich che Audirory Nerre pasles; che second is
common to ir and the Os Ocsipitis; che 8ih pair ot
Nerres, and che laceral sinus passes chrough irs
The Arst of che External, is che Meatus auditorius
Externus; the second is opened behind che Palare
Aruct ehic enerance of che Rays of Lighe into the ic is rhie end oF thar Pallase which comes trom the
Tube by ir, ind inclined rorvards che uxper parF OF Barrel oF the Far to he Mouth. The 3d is cheOri
he Tube, vohere is a licrle hole Furnisre d Wwich a (inaHI) sice oF the Conduir, by which the Caroridale Ar
Plane Convex Lyc-glals: S0 chac ihe Rays comins ceries encer che Cranium; and che Fourrh is behinc
From che Object, do First Fall on che Concave pla-
the Processuss Mastoideus; by it passes a Vein which
cedar the borrom ot the Tube, and are chence re. carries rhe Blood trom the external Teguments r0
Rected cowards the other end ot ic. Where chey
meer wich che Rac Speculum, obliquels posired, by
he Rerection ot Which cher are directed ro che
lierle Plano- convex ClaIS, and (0 r0 the Spectators
Ere, who lookins donnvards, sces the Object.
wvtrich che Telescope is curned to. This Instru-
mene is described more ac large in Philos. Frans
V. 8r.
che lacexa l Sinuss; Tomecimes chis FTole is wvancins:
there is anocher which is betwveen che Processus
Mastoidens and che Seyliformis, chroush wtrich che
Porrio Dura of che Audirory Nerre passes. They
have each a Sinus lined with a Carrilage under rhe
Meacus Auditorius, Which receires che condyle oF
the lorver Tavo.
TEMEORARY Fortisication. Sec Forrisica
AEcer this Ers FNaY, ehe Learned Inventormade. tion-
anocher Instrumene ot che same nature, with Wvtict,
hre Pairh, chac he could Read in the Philosophical
TENTATLLE, in Forrificarion, is a kind OF OuF-
work relembline a Ftorn-morke, buc generally some
Transactions opened in che Sun-Minc, ac an hundred wrhac disterent, in resard chac instead ofero Demi-
Poor distance, and discern some ot che Words ac bastions, it bears only in Front a Re-entrine AnelC
elie distance oF 120; its aperture (detined next che becwreen che lame Wings Wwichour Flanks; and the
ErC) was elien equal ro abore an Inch and : OF the Sides arc parallet: Bur when chere is more bredctu
Objeet Metal.
The Adrantases oF chis Feleleope mould bevery
at the Fread than ac che Corge, chese Tenailles are
called Oueuve d’yronde
TFNIATLLE Double or Flante d. i5 a Work whose
great, il ic conld be broughero ies desired Pertecti-
on. Bur ic is liable ro rivo Inconreniencies. First, Front consilts of tour Faces, matins rvo Re-entrine
Ansles, andchree saliant; che Winss or Sides ol
vould sec: thous etus a lulle OC and Practice chis Work beins in the likemanner correspondene re
FHC FFONE OF che GorgC.
TENATLLE Simple, is a Work HavinS IES FFONE
formd by rvo Faces, which make a Re- encrinz
Ansle, che Sides runmins directly parallel From che
Lleadroche COrze
TFNALL. L.F of the elace, i5 Fhac wtrich is c
prehended berween the LOIns Ot CVO neIBMBOUF.
ins Bastions; chacis to CaY, ihe Curtain; the cvo
coulel be lo hapry ae lo tute l a e00il metattine) Flauts pac aec tailea on Mle Cuprain, audehe quoe
didtee
TELE;COTICAL.Scars, are chole chac are l
C SICA OF a Telescope
LLMLLLLATE. ZonC. Sec Zone
LLMEORALIS, also Crocaphites, is a Musele
Thac ris nor very casie by it ro sind the Object rou
Clals on cre vucne Parallet to che Aris oF the C a
vould obriare; at least, placins a lmall Prospect
vies ot che Caroprick Tube, vou mighe readily
Cnor DM MIe CC OSeBY chaE, anc rhen ihe Tube
I TelF would be rIghE. Li Lu and much creater
Inconvenienco, is ine Coneare meralline Object
bocculum beins lubject ro L’arnict, (o chac ic wvill
noc continue lons sood. Buc il any Person couid