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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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Aure, 25 al0 by Rust, Wet, (90. and max be s beins accurare and fine, is spoiled by che tude
quire destroyca by Lire.
Experiments os ehe Nacure and Proverties os
the MagneT.
2. MIP. Boyle Found chat br hearine a Magnet
red hor, it could be spcedity deprired ot iIS A1-
tractive Oualitu.
2. IE a Loadstone Be heared red hor, and
and riolene Actacks oF cheFire: Bucthis mistur
Asene by workins uxon Tron, Potcens and opens
the Pores oF che Mecal (wrhich is harder Than
Tron Ore;) Po thar it becemes capable oF beins
Pecraded by che Magnerical Parricles, and by
chac means fains a Vertical duality.
6. Mr. Boyle Tound chat by heacins a piece oF
Fnelist Oter red hoc, and placins ic ro cool in a
proper Posture, ic plainly sain a Magnerick
then cooled cirher wich ies South Pole to the (POWci.
NTorch, in a Florizoncal Position, or wich its Souch
7. The Came Noble Gentleman Pound, thar
Pole donnvards in a Perpendicular onc, ic will an Excellent Loadstone of his omn, havins lain
chanse its Polarir, che Souch Pole becomins che almost a Zear in an Inconrenient Posture, hac
Northern one, aud vice versas
ils Virtue (0 impaired, chac he ac tirst choughe
2. By Applyins che Poles oF a verr (mall Tome Body had sor ar ic and spoiled ic by Fire.
Fraement ot a Loadstone ro che oppolite vigorous
8. IF a Nceale be Wvell Touchd on 2 800d
ones of a 800d larser Marnet, Mr. Boyle Found Loadstone, ris lenomn ic ill, wten duly poised
he could spcedily chanse che Poles oF che Fras- Poine Norch and South; buc il ic hare one con-
mene; but he could noc efsect ic in a Fragment Erarr Touch oF che lame Stone, ic will immedi-
thac mas considerabls bisser, cho herried many acels be deprived ot chac Faculer; and by ano-
FIOurS.
3. Hle obserred, thac Well Tempered and
Flardned Tron Tools, when heaced by Ruririon,
Furing, Filing, C9c. cher would, wrhile warm,
cher such Touch it will hare ies Poles quire chan-
sed; (0 chac che Fnd wtich betore poinced
Vorch, Mall non point Southward.
9. Dr Pomer and Mr. Boyle boch cried, chacaF-
Accract chin Filings or Chips of Tron and Stcel, cer a red hor Tron had sain d a Verticity by beine
but noc wrhen cold. Zec L remember OncC +O
trave seen my TelF, and tried, chat a piece oF a
File iwtrich was in che Flands OF NIr. Parmell Che
vell heaced and cooled Norch and Souch, anc
then also hammered ac che Fnds, chis Virtue
vould immediarelr be destrored by 2 Or3 blows
Spectacle maker, did rerain such an Auractire oF a Arons Flaminer smarely siven about che
Oualier, chat ic rould cake up and keep suspend-
ed che KeY oF a Cabinet oe Fscritoire, and
necded vo Atricion 10 excie chis Magneticat
Virrue.
midele ot iC.
10. MII. Boyle Tound chac by drawins che back
OE a Knise, or longpiece ot Sicet Wire, (8c. 0.
ver che Pole ot a Loadstone leisurelr, once Or
4. The Tron Bars oF Windons which hare divers rimes, beginnins che Morion From chC F.
lons Hood in an erect Position, do ero perma- quator or midale ofthesione, tomards chePole
neney Magnetical, rhe lorver Finds oF Tuch BarS
beinsthe Norch Poles, and che upper che Sou-
chern: For accordins r0 Laws oF Magnetism,
ve find the lorver ends ot such Bars rill drive
awas che Norch end oE a poised Necdle, and wilt
atrract the Souchern; Which Mews, chac by che
continual passase of che Subrile Magnerical Par-
che Knise er Wire rill accordinsly Actract onc
end ot a poised Magnerical Accdle; bur it vou
cake anocher Rnise or Wire, and chrust it leilure.
ly orer che Pole, Trom che Pole tomards the F.
quator or midale of the Fquator, ihis Knite
Mall expel or drire awas che Came end ot che
Necdle, Which che Former Knise vould Atcract:
cicles chro them, cher are cumed inco a kind of Wrhich Experimen makes ic very probable, chat
Masuet Themlelres
che Operation oFche Magnet depends on the Llux
5. IF a Bar oF Tron chac hach noc long A00d in of Pome fine Parricles which 80 our ac one l’ole
an crected Posture, be ontr held Perpendicular- then round aboue and in 29ain atthe other.
IV, ies servet ee  d ie Horch Pole, and
II. Because ir is one ot che Oniversal LaWs
Auract che Souch Poine oF a Touchd Necdle: OF Nacure, Thac Action and Reaction are alvays
Buc then chis Vistue is transiene, and will MifE equat: Theretore ris plain the Tron must AIract
25 ron Inverrhe Bar, For the orher end when the Magnet, as much as rhac dorhthe Tron: And
held lovermost, will prelener beconte the North
Pole; Wheretore, in order ro render the clalies
(0 vou may casily experiment ic ro be in Fact.
it ron place a Magnet or piece ot Tron on a piece
oF Verricier permanent in an Tron Bar, ic mustre-  of Corkr, (0 a5 chac ic mar svim freelr in the
main a tons time in a proper Position. Bur che lWVarer; For chen rou willsce, chat which (oerer
Fire will producechus etect in a Vets Mo; rou hold in rour Fand, ill dean the orhex ro-
Lrom all Which LxPCTIeHES, EIS PlaI (a3
cooled in an erect POMION, Or directr NOrth depend uxon Mechanical Principles. AS 2IIO, ThaL
and South. Nar, ic hach been obserred otten, there is such a Thins 25 che Magnetism of thc
thac even Tones and Fire Fortes, by beins otcen Farth; Or char chere are Magnetical Pantieles
heared, and then Pet ro cool in a Position near 10 (Wvtich continually are passins trom Polero Pole:
crect, hare saned chis Magnecical Properer.
Duc MIr. Nemron demonstrates, thac Gravier i5 2
TheReason oF Whieh verr disterent ERects oF vers disserent chins trom Magnetism; since the
the Fire on 2 Maenet, and on LrOn, LI. Boste,
Former is alvars as che Ouaneier oF Mattex AE.
avich his uluat Modestr, susgects i0 be chis: tracted, buc Magnerism by no means (0.
Thar che peculiar L’exture et Coheiturion by
NII. Zoblot Protesor oF the Machemarictes in
rohicte a Magnos dissero hem common tion Dre, ihe Frencb Aeadems ot Paircins, Cc. hach scundo
For 25 u will immediacels deprire a LoactoneDE Wards II.
IES Accractire POrVer, Or ChansC IIS FOlCS, (25 in
Exper. T. 2.) lo i illas loon sire à l’erticurle
a Bar oF Tron, il beins heared red hoc, ic bc NIr. Boyle concludes) Thât Magnetism doch mucti