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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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Al(0 an Arch oF 2. Circle vell Gradeared may
be sered (0 25 chac che Tongue oF the Bale
all Pay Ereely by ic, and chere Mew hC CHaNSC
ot rhe Graviey oF che Armosphere, o  scheretore in Philos. Transact. N. 185. The Doctoi
dicion eF any nem Weighes at alI.
WHIEEL BAROMEIFR, is a Concrirance fol
caule alto its veri dibieule ro aajuse he Balt atis
Thread, (9C. aria chac ThC LMLEPUIEnE IS VerY aP
lobe out of order, (50. Tis non out _t _IC. AHC
sires us anocher Contrivance (Which lic cale
chouetir ot in che lcar 1668,) oy puceine Sipiric ot
Winc, or some ocher Liquor chac vill nor lrceze
uxon che Nercury s Which evas desipned ro rile n5
the Mercury FalIS, and Fail as ic rises. And b
ehis means he could, he Cairh, enlarge the Dirisi
Oms as iuch as he p’ealed.
NIALIME BATOMETER, is an InHrUMenE
concrired by Dr. Hook. For che ule ot those chZC
vould make a Philolophical Paperimene ac SCi.
FOr ele Morcuriat Barometer reguirins 2 per
Dendicular polture, and che Ouick silrer vibracins
cherelore uncapable ot beine mace ac Sea, (Th0
Wherein che Policion ot che Instrumene Was nor se
Ir is abour 40Years since, chac che Thermome-
oF Wine (ErR brouhe into Fnsland our ot Icaly b
Sir Roberi Souchmell) 25 a prover Scandard oF etic
thac Acherial Spirit beins allot the lenovn Liquors
especially wich a moderare depree ot cirtier LeaF
Or Cold
ehe applyins. oF an Index 1o any Common Baroscop
hecher it CaIS DC O a MSC La, Or have
 round Boll.head ac the cop; ad by che means
chereot, este variarion of ihe Alciiude Of rhe Mer-
curial Cylinder, Which ac mostis hardly 3 Inches,
may de made as distinguistable, 25 it ic everc:
Foor, or 3 Zards, or as much more as is desired.
Fhis WVheel-Parometer was invenced by Dr. 1500le
he Manner Whereot is visible in che Figure
where  L C reprelents che Lube, e sde
cirher Blunc or vich a Hend, as A B C (by which cherein vich ereat violence uxon any Agication, id
latrer Shrape, more Room is alioved for auy se
mainder os Rir, r0 expand the BCHeF.) This is (ic hach larely been concrived ro be made porcable,
ro be Alled wich Ouick-hlver, aud inverred as com. 10 ic remain d co Aind our some ocher Principle
monis, and puc inco a Vessel ot Srapnant Mercury
mace atrer the tachion et PR, chac is, havins ies indispenlably necessary: L’or chis che aborenamed
Sides abour 3 Or 4 lnches high, and che Cariry otPerson invenred. Is Delcriprion and D ses theIn-
ic equally bis boch abore and belo; and il ic genious C apr. TFalley in Philos. Trans. PN. 269.
can De (besides char part, wrhich is Alled by che sires as Tollons
end oF the Merourial Tube, chac Cands in ic) ot
equal Capacies rich che hollon of che Cane a. ters of Rohert de Fluctibus depending on che Dila-
bontB; For chen the Ouiek silver risins as much in ration and Concraction ot included Aix by Hleai
Chehollon ot B, as ic descends at B, che difference and Cold, hare been diluled, upon discorerr thac
OErhe Feishr in che Receiver P, will be just halt rhe AirsPretture is unequal; chac lnequalicy mix
cheusual difference. And il che Reccirins Vessel ins ic selt wich che Pfects ot che Warmeh of che
X have a bisper Cariir, the difference vill Be Rir in thac Instrumenr; and instead thereot wac
sels; bur it sels, the difference will be grearer: substiture d che sealed Thermometer including Spirir
Buc, Whecher the difference be made hereby bi8.
per or lels, ris no greac marcer, since by the con-
crivance of che Wtheel and Index, che least Variari- Temper ot che Rir in Relarion eo Hearand Cold
on may be made as lensible as is desired, by dimi
nistins chebignels of the Cylinder F, and sensch- che most suscepeible oF Dilaracion and Conrractior
ening che Index FG, accotums to rhe Proporrie
requitire.
Nom chis beins allo das a Scandard, and che
Thermometer thar includes the Air being pradua-
ced vich ehe Came Divisiens, 10 as ac ehe rime
When the Air vas ineluded eo agree wich the Spi-
rit-Thermometer in aIl degrees ot Ilear and Cold.
noceing ac che Came rime che precile heighe ot rhe
Mercurys in che commion Baromerers; ic Will rea
dily be understood, rhac Wwheresoever chese enc
Thermometers Mall agrec, che Prelture ol IIC B
is the lame ic Was, irtien the Air vas includea anc
che Instrumene graduaced, cal sI n the Air
Thermometer che Liguor
on the Spirit Ca(s, IL 13
Wten the Instrumene Was graduared. And or
the contrary, it is 10b
the Air is (0 much ligtirer, and che Ouick-silve
d hipher chan rhe Di
vitions martced thereon, correspondine wirh chas
n Indication chac chere:
Grearer Pressure ot che Air ar chac citme, rhan
cluded, wwhen che AIr
Gla(S Rands lover than che Spirir, viz. thar wwher
in che ordinary Baromerers lover chan ac che Caid
cime ot Crlacuacion
And che SpACCS. anLIVeFINS WO. AB LBCM OF Mer
cury vill bemore or lels; accor ro che Onan
cey ot Air lo included, aie sse MaInels ot ch.
Clato Lave in wohich etie ensuor eles and Falis
and may be augmented a l
ander chac ot che Specisk Cravicy ot the Ligior
any Provorrion
OF che Thermometer to Mercury, 10 25 t0 hare
Buc chis WVoec
ter noc anlverine Fully
the desgned Exactness, because the Mercury is
apc ro Rick aboue the sides ot ehe ClalS, and vould
cold us, Thar che risins et  sis Aorec
eite and tall by Leaps, and all ac once; aud be sarc Neachee glles Poul, aae u sallents peoi
Foor or more for an Inch oE Mercury, Wrtich is
anocher prear Convenience
nehese parrs ofttie Norid, lone Fxperience has
tt te