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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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the Fridence, Verdict, or ocher Proccedinss be- had nor, all Bodies mould be alike specificallu
forethe Justices.
POHS Cerebri, (by Seme) is a Congeries or
Fcap ot innumerable Filamenes diraricared our
oF the solider Substance of che Brain, irhence
allche Nerres rake cheir Rile.
PONTACE, is a Contriburion torvards che
Maincenance ox Re-editrins oF Bridges. Iemay
also signitie TOII caken ro chis Purpose of chole
chac pals over Bridses.
PON TIBOS Reparandis, 15 2 Writ directed
2o che Shexit, C5c. Willins him ro charse one Or
more i0 Repair a Bridse, ro arhom ic belone
eth.
POIrTONI, in Forrification, is a Bridge made
OF Lvo BOaES, at Lome Diltance one ErOM anO-
cher, both covered with Planks; 25 alI0 ihC THI
ternal Space beroixe chem. Ther hare PrOPS
and Rails on each side; and the whole Stri-
cture oughe to beso solid, as to bc abletorrans-
Porr che HTorle, cogecher vich Cannon and Bas
SagC, 25 Wvell 25 che InFanCEY.
POHT Volant Or the Flgins Bridse, uled in
veistier.
PORIME, (Or. XoeC) in Geometer, i5 2
Theorem or Propolicion (0 casie to be detmon-
Rraced, chat ris almost selFerident; a5, That a
Chord is all of it vithin the Cirele. And on the
contrary cher call char an Aporime, Wrhich is (0
disticult as ro be almos impoisible eo be demon-
Arated; a5 che Oundrature of the Cirele IS hoW.
and 25 che Sguarins ot any Alsigned Porrion ot
Hippoerates his Lunes was, rill a siule wtile
250.
PORISME. Proctus and Pappus desine chis
Geomerrical Term ro signikie a Kind OF Theo-
rem, in the form ot a Corollary, whrich is de-
Pendant upon, or deduced From lome octer The-
orem alreads demonstraced. And ris commont
uled to signitie lome Ceneral Pheorem, which is
discorered from Andins out some Geometrical
Place: AS, For Instance, iF a Nan hach foune
out by Alsebra, or any other Mechod, ho 10
Construct a Local Problem; and From that PlaCC
(0 constructed and demonserated, harh deduced
Sieges, is made of eo mall. Bridses laid one fome General Theorem, that Theorem is by the
over anocher; and (o concrived, by the means Geometrick Wrirers called a Porism. OE chese
oF Cords and Pullers placed alons che sides oF Porisms, MIr. Ozanam, in his French Mathemati-
the Vnder Bridoe, chac the Upper can be puttr- cat Dictionary, sires mans uletul CnAaNCES;
ed Forvards rill ic joins che Place where ic isto ertrich sec.
be sixed: But boiverer che Whole Lenoch oF
PORISTICK Mathod, in Mathematicts, is
boch chese Bridses must nor be abore POur OF thac wvhieh decermines mhen, by what may, and
Fire Fachom lone, lest cher Mould break wich hom many different mays, a Problem may be re-
the WNeighE OF the Men. These are chieA)
uled eo Turprise Out- Works or Posts chat have
buE MAETON NOAES.
POOP of a Ship, is the Floor Or Deck over
Colved.
POROCFLE, is a Rupture proccedins from
Callons Matter, Or the Stone. Blanchard.
POROTICA, are Medicines Wtich, by dev-
he Round house or Masters Cabbin, beins che (ins. thickenins, and astringent Oualicies, curm
highest PALE OL UPPETHIOCL PATE OF her TTull a-
stern.
POPLITEA Vena, is the Vein oF che Ham,
and somerimes reaches down the Back OF the
Leseren ro che Hcel. This comes From chic
Iliacat Branches oF che Vena Cava; wrhich, af-
Pare oF che Nouristimene inco Brawny, Callous
Narrer. Blanchard.
POROSTEY. SeC PoreS.
PORTA, thelame with Vena Portae.
PORT ihe Helm, a Sea- Perm, Signifyins 10
put che Helm to the L elt Or Larboard side oF thC
cer they descend as lo asthe Thiehs, are called Shrip; but horverer they never Cay Larboard ibe
Crurales.
Fselm, DuE alvays Port it; tho cher Cay Star-
POPLTTEOS, by Tome called Subpopliteus, board the Fselm, Wrhen it is to be pur ro the Righe
is a Musele oF che Les, wrhich ariserk Wwich a
side oF the Strix. A Strip also is said eo Heet
MorE Arons Tendon trom che External LTead of a- porr, wrhen Me svims not uprishe, buc deans
che Inferior Appendix oF the Os Femoris; From ro the Letr side. Phe Word
evhence descending obliquely over the juncture,
PORL, allo signities 2 Flaven or Flarbour,
becomes Flemy, and expandins ic set6, is (0 in- 25 aH(o chole Floles in a Strips side, chro Wwhict
Certed ro the Superior part of the Tibis inter-her GrCaE GUInS arC pUE OUE.
nallY, immediatel) belorr iis Superior Appendix.
Ihis astists che orher Muscles in bendins che
POKT-Past, che same as che C un male OF 2
Ship; cheretore chey Cay a Tard is donn a Port-
Tibia, and also Antaronizeth Fhe Biceps, BY TIE- last, When it lies donon on the Deck
ins the Foor and Poes outwards irhen ve st
wich our Rnces bended.
PORTABLE Barometer, Was srst invented
by thetTonourable NII. Boyle, and Was effected
PORES, are small Incerstices, Spaces, Or Va- by makins che Torricellian Pxperiment in a lon8
evities between the Parrieles oF Macrex that CON- ClalS Tube, sealed at the rop, and bene near che
stirure every Body; Or between certain Aggre
bocrom up again, parallet eo che longer L. Cs:
saces or Combinarions oE chem. Thus, For In- For by chis means che Ouicklilrer in the open
stance, chole licele imperceptible FToles in che and Morrer Les, supplied the Place ot theMas-
Stein, chro irtich the siveat and Vapours insen, nant Nercury in the Balon or Cistern. The
Sibly breach out of the Body, are called Pores; Instrument was all ot, one piece, and mighe ea-
and the haring of Cuch FToles or Pores in any  sils be carried from Place ro Place withour lpil
BodY, L Called P’orosity or Porousnest.
lins che Mercuer. BY which means, Obserra-
The Flonourable MIP. Boyle has erieten a Par- tions oF the Weishc oF che Armosphere mighe be
cicular Essay on the Porosiry oF Bodies; in which readils made on che. Topsot Fills, Borcoms ot
hie prores, Thar che most Solid Bodies thac are
hade stone tiniae oe posei uia raded, il es
viei 1c