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# Title: Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences (shelfmarks Leibn. Marg. 71; ZEN Leibn. Marg. 71)
# Folio - , page id 806933011:0409
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sed with a5 Great a WVeighE OF PreNure OF Water,
a5 iF ic vere a Cylindricat Vessel aSO) PFTK ot the
tame Base arid Atcicude, wich che unequally Ma
Ded Tube.
Drav che Lines as vou sec in che Fioure, se
MaII Q V reprelent a Coluirin ot Wacer in thelav.
poled rruly Cplindrical Vessel; harins the Diame-
cer ot ics Bale double 10 Mhac ot R L, B M, Or
C
Then will ehe Column oF Water B N, BearinE
uxon the Aem (NI N) OF the Libra L N; Whole
FTypomochlion is imagined eo bC AEMI, BC a COUN-
cer-Ballance tOthe COIUMN OF WV AFeF R NI, WhieM
is Kept donntrom alcendins anr hisher by che Mde
OF thie Vesset P D, just a5 the WeighE AE Z, ac ctie
end X, oF che Libra F X, whose Hrponochilion is
ac Y, is ballanced by che Side oF che Vesset P D
Which hinders che Arm P Y trom ascendins. No
F Y beins == Z X, the eishe sustained by chc
sypomochlion at T, is double ro chac acZ; Wrhere-
Fore che subjacent Poine M, Or chatpare OF rhe BOF-
rom ot the Vessel L. NV, must be charged wich dou-
ble rhe weighe oF the Column oF WVater B N; OF
hich isall onc, Will be pressed wichche weighe of
ihre Column oF WVacer R N, Which may be supDO.
Ted ro reach quire up eo che FOP.
LetuS ThenFaKe A N L K E D, as equiraleHETO
such a Column, chen Wwill chac Wacer be a Ballance
on the FIypomochlion L, 1o che Wacer leanins on
the orher Arm of the Libra KL, and Kepr down
by ehe side of the Vessel KE F; and consequenty,
the Parr of che Boccom IE N, Wil Custain a Pret
Ture equal ro rhac ot che Column OF Warer CL N;
For chis, by che abore mentioned way ot arguins.
is che lame a5 chac oE che Wacer contained in che
Space ANK D B.
And chus, on che orher side, ic may be proved,
Tharche remainins parr oFthe Borom N FI, is
pressed uxon by che WVater ANHI F C, equiva
sene eo che Weishe oE che Column OF Water IH,
reachins uprorhe Top.
From wrhence ic Follons plaintz, Thacche Wa
rer in ehe Tube BD R HI FC, presses or gravi
caces on che Bocrom equally wich che eistie ot che
Cxlindrical Column QT FTK, havins an equa
Base With IF.
AII wtich Nechod oF Arsuins, will be clear e.
noush ro one char considers cis che Properry oF al
Fluids, From the knovn Laws oF Fydrostaticks, re
have cheir intinicely small Columns, ot which ches
consist, r0 be every where a BalaHCC 1O OnC anO
cher.
e A Bd DBX VH
That a Body immersed in a Fluid, sustains a lateral
Pressure from the Fluid; which also encreaseth as
ibe Body is placed deeper beneath the Sursace os et
Eluid.
near thie BOrrOm; Thac the lOrveF ParE L C, may
verr nearty makre à Righe Angle wichche ocher
PAEF F F. Dipthis Pipe or Sypton in Oil OF Lur-
penrine, and cake up abour 3 or a Inches ot ic in
he Pipe, Which voû may kecp chere by aprlvins
rour Finserroche upper Oritice.
This done, move che Syphon into a GlaIS OF
Water, and place ie L0 chere, thac the longer Les
max sand perpendicularty co ies Surtace, and rhat
phe ochex lomer Les may be (0 lac beloi ite du
eu vi de na imra
FaCC OFTC Water, 25 That thC appet surtace of ché
OH LR tBC LOnGeF L CB, BC BIE a AMLLC HIGHOT LITaL
FhaE OF the WVacer in the GlaIS: For chen it vou
remore rour Finger Fromche Top, che Oil in che
Tube will rery licele, il ic all, chanse ies Scarion;
Which es plaintr, chacchere is a lateral Presture
asainst che Oil ax chelorver Orisice C, Which hin-
ders ies rumnins our, cho pressed by che Cplinder
ot dil concained inche Perpendicular LCs. And 25
il yon raise che Pipe ux higher (Kcepine ic Aill in
its perpendicular Posture) che Oil wwill drop oue, (0
is vou snk ie lorver che Wacer will sec in atC
and Force che Oil aIl ont oF rhar Les CP, and raise
ehe Oilproporrionabls in che perpendicular one Fi P
Nay, il von cheust it lo enough, che Wacer wrill
rise up into che longer Lez, and bear the Oil above
ic; Wtich last Circumstance proves, HaL WVaceK
hach a lareral Pressure against ic selF, 25 great as HC
Perpendicular one From abore, sinee rhat only can
Torce ine ater up into che Perpendicular L ex.
I allo sceepine the Tube ac che Pame Depch, vou
curn ihe Tlorizontal Les here and chere, or place
its Orifice C, in any pare of che Imaginary Plaim
FG, che Oil will keep irs former Rarion in the
Lube, and neicher rise nor s, WMCN; Thac
chis laceral Presture is equabte aet  al
elaces or Parrs of a Vessel oF Nater, ac che Pame
distance FrOM itS Surtace.
Our Noble Ruchor contnis che Tcuh oE ctiis
Fakre a Dendes CTals-Fube, ane Let AL DC Dent le