A brief letter from a young Oxonian to one of his late fellow-pupils upon the subject of magnetism
         Wallis, John, 1616-1703.
      
       
         
           1697
        
      
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             A brief letter from a young Oxonian to one of his late fellow-pupils upon the subject of magnetism
             Wallis, John, 1616-1703.
          
           [2], 14 p. : ill. (woodcut)
           
             printed for S. Keble at the sign of the Turks-Head in Fleet-street,
             London :
             1697.
          
           
             A young Oxonian = John Wallis.
             Reproduction of the original in the Exeter College Library, Oxford University.
          
        
      
    
     
       
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         eng
      
       
         
           Magnetism -- Early works to 1800.
        
      
    
     
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           A
           Brief
           LETTER
           From
           a
           Young
           OXONIAN
           To
           one
           of
           his
           late
           Fellow-Pupils
           Upon
           the
           Subject
           of
           MAGNETISM
           .
        
         
           LONDON
           :
           Printed
           for
           
             S.
             Keble
          
           at
           the
           Sign
           of
           the
           Turks-Head
           in
           Fleet-street
           ,
           1697.
           
        
      
    
     
       
         
         
         
           A
           Brief
           LETTER
           From
           a
           Young
           OXONIAN
           ,
           &c.
           
        
         
           
             SIR
             ,
          
        
         
           SInce
           my
           last
           Opportunity
           of
           Discoursing
           with
           you
           ,
           (
           which
           is
           now
           some
           Months
           past
           )
           my
           Thoughts
           have
           run
           continually
           upon
           the
           Subject
           we
           were
           then
           engag'd
           in
           ,
           which
           was
           the
           Nature
           of
           Magnetism
           ;
           and
           what
           with
           the
           dignity
           of
           the
           Matter
           and
           the
           Indearments
           of
           the
           Party
           who
           argu'd
           so
           Rationally
           upon
           it
           ,
           whereof
           the
           one
           facilitated
           the
           remembrance
           of
           the
           other
           ;
           I
           have
           hardly
           talk'd
           of
           any
           thing
           else
           waking
           ,
           nay
           ,
           (
           as
           I
           am
           told
           )
           sleeping
           too
           ,
           and
           all
           this
           at
           last
           without
           the
           success
           that
           might
           justly
           have
           been
           presum'd
           of
           such
           frank
           endeavours
           ;
           but
           that
           you
           may
           know
           how
           much
           I
           am
           the
           wiser
           ,
           and
           be
           diverted
           by
           my
           Example
           from
           lavishing
           too
           great
           a
           Portion
           of
           time
           upon
           such
           Gordian-knots
           ,
           I
           have
           ventur'd
           to
           send
           you
           the
           summ
           of
           my
           Acquisitions
           .
           It
           is
           a
           Question
           which
           we
           know
           has
           employ'd
           and
           prov'd
           too
           hard
           for
           the
           Pens
           of
           the
           most
           eminent
           Philosophers
           ,
           and
           is
           to
           be
           rank'd
           among
           those
           Misteries
           of
           Nature
           ,
           which
           neither
           the
           thoughtful
           Ancients
           ,
           the
           laborious
           School-Men
           ,
           nor
           our
           acute
           Virtuosi
           ,
           could
           ever
           make
           a
           compleat
           Discovery
           of
           :
           Not
           but
           that
           the
           Peripatetick
           is
           verily
           persuaded
           he
           has
           seen
           farther
           into
           it
           than
           other
           People
           ,
           as
           long
           as
           he
           can
           answer
           your
           demands
           with
           Occult
           quality
           or
           its
           elder
           Sister
           Substantial
           form
           ;
           and
           if
           this
           does
           not
           lay
           it
           all
           bare
           ,
           what
           does
           ?
           there
           is
           says
           he
           ,
           very
           gravely
           ,
           something
           whereof
           we
           cannot
           with
           confidence
           affirm
           any
           thing
           ,
           which
           either
           within
           the
           Magnet
           or
           from
           without
           ,
           disposes
           it
           in
           such
           and
           such
           a
           manner
           ;
           and
           then
           
           there
           is
           another
           
             what
             do
             you
             call
             it
          
           ,
           with
           which
           according
           to
           the
           Determination
           of
           its
           Poles
           ,
           it
           attracts
           or
           repels
           a
           Body
           Congenial
           ;
           and
           think
           you
           Sir
           ,
           this
           answer
           is
           not
           very
           worthy
           of
           a
           Philosopher
           ?
           Others
           have
           entertain'd
           an
           Opinion
           ,
           that
           the
           Magnet
           accomplishes
           its
           Operations
           by
           the
           Emission
           of
           Effluviums
           out
           of
           its
           own
           Continuum
           ;
           and
           this
           the
           Learned
           have
           so
           Rationally
           disprov'd
           already
           ,
           that
           I
           shall
           think
           it
           sufficient
           ,
           if
           not
           superfluous
           ,
           to
           offer
           but
           one
           Objection
           against
           it
           ,
           which
           shall
           be
           grounded
           upon
           the
           Nature
           and
           Structure
           of
           the
           Load-stone
           .
           It
           is
           to
           be
           remembred
           that
           as
           that
           Stone
           is
           for
           the
           most
           part
           fetch'd
           out
           of
           Iron-mines
           and
           foster'd
           in
           Beds
           of
           
             Iron
             Ore
          
           ;
           so
           in
           its
           Nature
           it
           scarce
           varies
           from
           that
           Metal
           ,
           save
           in
           the
           eminence
           of
           one
           Quality
           which
           is
           Compactedness
           ;
           for
           altho'
           in
           other
           Qualities
           it
           dissents
           from
           Iron
           ,
           as
           in
           its
           Gravity
           ,
           Inductility
           ,
           and
           Microporosity
           or
           littleness
           of
           Pores
           ,
           yet
           in
           these
           it
           rather
           differs
           from
           the
           Metal
           consequentially
           than
           essentially
           ,
           since
           the
           Original
           and
           Fountain
           of
           them
           seems
           to
           be
           the
           Quality
           of
           Compactedness
           ,
           for
           the
           comprehension
           of
           more
           univocal
           matter
           in
           less
           Space
           ,
           which
           is
           but
           a
           Periphrasis
           of
           Compactedness
           unecesarily
           requir'd
           to
           gravity
           ;
           and
           then
           as
           for
           its
           Inductility
           ,
           't
           is
           confessed
           that
           the
           most
           compact
           and
           heavy
           of
           all
           known
           Bodies
           which
           is
           Gold
           ,
           is
           the
           most
           Ductile
           and
           Malleable
           ,
           but
           it
           is
           not
           reasonable
           to
           conclude
           from
           thence
           ,
           That
           the
           most
           Ductile
           and
           Malleable
           Bodies
           are
           always
           the
           most
           compact
           and
           ponderous
           ;
           Ductility
           or
           Malleableness
           as
           I
           conceive
           ,
           requiring
           no
           more
           than
           that
           the
           Parts
           should
           be
           of
           such
           a
           Figure
           as
           would
           be
           least
           impatient
           of
           those
           Impressions
           ,
           suppose
           of
           an
           
             Aequilateral
             Quadrangular
             Superficies
          
           ,
           whereas
           such
           a
           similitude
           and
           correspondency
           of
           Parts
           seems
           not
           to
           be
           absolutely
           necessary
           to
           a
           Bodies
           becoming
           heavy
           and
           compact
           ,
           so
           their
           Connexion
           and
           Union
           be
           but
           such
           as
           admits
           of
           the
           smallest
           Interstices
           and
           Pores
           ;
           not
           but
           a
           coincident
           Figure
           of
           Parts
           ,
           such
           as
           that
           I
           just
           mentioned
           an
           
             Aequilateral
             Quadrangular
          
           ,
           contributes
           much
           to
           Compactedness
           ,
           for
           which
           reason
           all
           Architects
           take
           care
           their
           Materials
           be
           of
           such
           a
           form
           .
           But
           the
           parts
           of
           the
           Load-stone
           are
           in
           all
           probability
           so
           far
           from
           Aequilateral-Quadrangulars
           ,
           that
           they
           are
           rather
           to
           be
           supposed
           of
           a
           Branchy
           stragling
           Figure
           as
           the
           Parts
           of
           
           Iron
           ,
           yet
           because
           those
           Branches
           are
           better
           and
           closer
           Plaited
           and
           Connected
           one
           with
           the
           other
           than
           those
           of
           Iron
           ,
           which
           are
           so
           loosly
           dispos'd
           as
           to
           be
           even
           thorough
           fares
           for
           Heterogeneous
           Matter
           ,
           they
           become
           more
           Inviolable
           and
           Inflexible
           than
           those
           of
           the
           latter
           ;
           nor
           is
           there
           any
           farther
           occasion
           to
           prove
           as
           much
           of
           the
           Tenuity
           of
           its
           Pores
           .
           seeing
           therefore
           the
           Magnet
           and
           Iron
           have
           so
           near
           an
           Affinity
           as
           to
           be
           in
           respect
           of
           Magnetism
           ,
           two
           Species
           of
           the
           same
           Genus
           ,
           and
           their
           difference
           chiefly
           to
           consist
           in
           the
           Dignity
           and
           Degrees
           of
           some
           Accidents
           ,
           on
           account
           of
           which
           Iron
           may
           be
           reputed
           an
           imperfect
           and
           Bastard
           
             Load
             stone
          
           ,
           and
           the
           Load-stone
           the
           most
           pure
           and
           noble
           Iron
           ;
           there
           will
           be
           found
           but
           few
           Phaenomena
           which
           may
           not
           be
           attributed
           to
           both
           indifferently
           ,
           wherefore
           it
           ought
           to
           be
           a
           general
           Prolegomenon
           in
           disputes
           upon
           this
           Subject
           ,
           That
           Magnetism
           ,
           not
           of
           the
           Magnet
           only
           properly
           so
           called
           ,
           but
           of
           all
           Magnetical
           Bodies
           is
           the
           Theme
           .
           Magnetical
           Bodies
           being
           therefore
           naturaly
           unapt
           for
           Malleableness
           and
           Ductility
           ,
           though
           one
           Species
           less
           so
           than
           another
           ;
           it
           will
           follow
           that
           notwithstanding
           they
           are
           tight
           and
           compact
           ,
           yet
           that
           the
           Parts
           of
           them
           are
           of
           no
           Quadrangular
           regular
           shape
           ,
           but
           on
           the
           contrary
           of
           a
           stragling
           Branchy
           one
           ,
           though
           strongly
           Interwoven
           and
           Connected
           ;
           whence
           it
           is
           Demonstrative
           that
           the
           Effluviums
           of
           Magnetical
           Bodies
           flow
           not
           from
           within
           themselves
           ,
           for
           by
           such
           a
           Procession
           and
           Expiration
           ,
           it
           is
           certain
           there
           must
           be
           a
           very
           considerable
           and
           visible
           expence
           of
           the
           Parts
           :
           for
           though
           slightly
           considering
           the
           matter
           ,
           it
           may
           be
           answered
           that
           the
           Evaporating
           Particles
           are
           few
           and
           slender
           ,
           yet
           when
           their
           mutual
           Dependence
           and
           Concatenation
           is
           weigh'd
           ,
           it
           will
           appear
           that
           one
           single
           Particle
           cannot
           escape
           without
           the
           attendance
           of
           its
           whole
           Chain
           ,
           so
           that
           in
           a
           short
           time
           there
           would
           necessarily
           succeed
           a
           very
           sensible
           and
           obvious
           decay
           of
           Parts
           ;
           and
           this
           may
           suffice
           you
           for
           the
           Confutation
           of
           the
           Opinion
           of
           Perspiration
           .
           I
           shall
           not
           worry
           you
           with
           the
           rest
           of
           those
           Hypotheses
           and
           Notions
           which
           some
           Mens
           Brains
           have
           teem'dwith
           ;
           such
           as
           the
           Influence
           of
           the
           Stars
           ,
           or
           the
           entire
           Magnetism
           of
           the
           Earth
           and
           the
           like
           ,
           which
           instead
           of
           giving
           a
           light
           into
           the
           Question
           ,
           is
           but
           meer
           building
           new
           Extravagancies
           
           and
           Errors
           upon
           our
           Antecedent
           Ignorance
           .
           I
           have
           therefore
           only
           a
           Word
           to
           say
           to
           
             Des
             Cartes
          
           and
           the
           
             Materia
             Pennata
          
           Men
           ,
           and
           so
           shall
           go
           on
           to
           perform
           my
           promise
           .
           The
           latter
           of
           them
           seem
           to
           be
           offenders
           against
           all
           Reason
           and
           Rule
           too
           ;
           it
           is
           a
           receiv'd
           Maxim
           or
           Postulatum
           among
           Philosophers
           ,
           That
           Entities
           without
           a
           necessity
           are
           not
           to
           be
           Multiply'd
           ,
           and
           if
           so
           ,
           then
           certainly
           are
           those
           Philosohers
           to
           blame
           ,
           who
           have
           invented
           a
           new
           Species
           of
           Matter
           ,
           of
           an
           unaccountable
           extract
           and
           production
           to
           effect
           those
           Operations
           which
           another
           Species
           of
           Matter
           ,
           the
           existence
           whereof
           is
           evidently
           known
           has
           Power
           to
           effect
           .
           But
           as
           for
           the
           Ingenious
           
             Des
             Cartes
          
           ,
           it
           were
           an
           unpardonable
           peice
           of
           Ignorance
           and
           Envy
           ,
           not
           to
           acknowledg
           his
           Hypothesis
           to
           be
           the
           most
           satisfactory
           and
           adequate
           Account
           hitherto
           Published
           ;
           but
           yet
           as
           a
           Man's
           having
           good
           Eyes
           when
           he
           walks
           in
           the
           Dark
           ,
           will
           not
           save
           him
           from
           stumbling
           some
           times
           ,
           so
           neither
           could
           the
           Perspicacity
           of
           this
           great
           Man
           ,
           ensure
           him
           from
           many
           mistakes
           in
           the
           trace
           of
           so
           profound
           a
           Secret.
           For
           not
           to
           mention
           to
           one
           who
           knows
           them
           so
           well
           ,
           the
           many
           perplexities
           which
           the
           Learned
           have
           discover'd
           in
           his
           Philosophical
           Principles
           ,
           altho'
           the
           reality
           of
           his
           
             Magnetical
             System
          
           must
           unavoidably
           stand
           or
           fall
           with
           those
           Principles
           :
           I
           say
           not
           to
           mention
           any
           thing
           of
           this
           ;
           there
           are
           yet
           some
           difficulties
           observable
           in
           the
           System
           it self
           ;
           take
           one
           for
           all
           ,
           for
           his
           Instruments
           ,
           he
           supposes
           a
           sort
           of
           fine
           Matter
           to
           issue
           out
           of
           both
           Poles
           of
           the
           Earth
           after
           such
           a
           manner
           ,
           that
           those
           that
           come
           from
           one
           Pole
           take
           a
           compass
           round
           the
           Superficies
           of
           the
           Earth
           and
           enter
           in
           again
           at
           t'
           other
           ,
           which
           matter
           he
           has
           Denominated
           
             Corpuscula
             Striata
          
           ,
           because
           of
           the
           Strias
           impressed
           upon
           it
           by
           being
           drain'd
           thro'
           the
           Apertures
           or
           Interstices
           necessarily
           left-between
           the
           contacts
           of
           the
           Globuli
           of
           his
           second
           Element
           ;
           This
           matter
           he
           supposes
           to
           be
           a
           Species
           of
           his
           first
           Element
           ,
           which
           he
           defines
           thus
           ,
           
             Quoe
             tantam
             vim
             habet
             agitationis
             ,
             ut
             aliis
             Corporibus
             occurrendo
             in
             minutias
             indefinitae
             parvitatis
             dividatur
             ,
             &
             figur
             as
             suas
             ad
             omnes
             Angulorum
             ,
             abijs
             relictorum
             angustias
             implendas
             ,
             accommodet
          
           ;
           It
           is
           ,
           says
           he
           ,
           so
           agil
           a
           kind
           of
           Matter
           as
           upon
           encountring
           other
           Bodies
           ,
           to
           dash
           into
           innumerable
           Particles
           ,
           and
           conforms
           it self
           to
           the
           Spaces
           
           which
           are
           left
           between
           those
           Bodies
           .
           but
           how
           is
           it
           possible
           to
           conceive
           ,
           That
           Matter
           of
           so
           easy
           and
           yeilding
           a
           Nature
           should
           not
           be
           as
           Susceptive
           of
           an
           Impression
           from
           ,
           and
           as
           conformable
           to
           the
           Pores
           of
           Bodies
           compounded
           of
           third
           Elementary
           Matter
           ,
           in
           the
           number
           of
           which
           are
           Magnetical
           Bodies
           ,
           as
           it
           is
           to
           the
           Interstices
           of
           the
           Globuli
           of
           the
           second
           Element
           ,
           which
           if
           it
           be
           ,
           then
           cannot
           it
           act
           with
           any
           force
           or
           impulse
           ,
           but
           must
           glide
           ineffectualy
           thro'
           the
           Passages
           of
           the
           Magnet
           ,
           and
           like
           a
           winding
           Stream
           comply
           with
           the
           Luxuriancy
           of
           its
           Channel
           ;
           nor
           will
           it
           avail
           to
           say
           that
           this
           Matter
           upon
           approaching
           the
           Poles
           of
           the
           Magnetical
           Body
           is
           Congregated
           ,
           and
           Acts
           with
           an
           united
           force
           ,
           since
           we
           cannot
           see
           why
           it
           should
           more
           readily
           congregate
           and
           confederate
           upon
           such
           an
           accession
           than
           before
           or
           after
           it
           ,
           unless
           ,
           which
           this
           Learned
           Philosopher
           I
           am
           sure
           will
           not
           admit
           ,
           it
           is
           Collected
           by
           some
           Sympathetical
           Attraction
           of
           the
           Magnetical
           Body
           .
           thus
           Sir
           ,
           you
           see
           one
           Difficulty
           ,
           and
           were
           it
           needful
           perhaps
           I
           could
           make
           you
           sensible
           of
           many
           more
           ;
           but
           I
           am
           unwilling
           to
           attempt
           a
           Dispute
           ,
           which
           would
           be
           as
           endless
           as
           the
           Ropings
           of
           the
           
           Welchman's
           Toasted
           Cheese
           .
           Now
           be
           pleased
           to
           hear
           what
           I
           can
           say
           for
           my self
           .
        
         
           It
           is
           apparent
           that
           there
           can
           be
           no
           such
           thing
           as
           Motion
           without
           an
           Impulse
           ,
           and
           that
           upon
           such
           an
           impulse
           a
           Motion
           greater
           or
           less
           must
           ensue
           ;
           from
           whence
           we
           gather
           that
           all
           Magnetical
           Bodies
           require
           some
           Impellent
           to
           enable
           them
           to
           perform
           those
           various
           Feats
           and
           Operations
           observable
           in
           them
           ;
           and
           here
           an
           Inquiry
           will
           arise
           ,
           were
           we
           shall
           meet
           with
           an
           Agent
           confessedly
           existent
           in
           Nature
           ,
           neither
           too
           gross
           not
           too
           feeble
           ,
           but
           in
           all
           respects
           qualify'd
           for
           such
           undertakings
           ,
           
             Corpuscula
             Striata
          
           or
           Pennata
           ,
           as
           has
           been
           already
           shewn
           ,
           are
           Fabulous
           or
           Impotent
           if
           not
           both
           ,
           and
           the
           daily
           Testimonies
           of
           Mens
           Eyes
           assure
           them
           that
           no
           visible
           Conspicuous
           Agent
           is
           in
           the
           Cause
           ;
           of
           necessity
           therefore
           it
           must
           be
           something
           of
           a
           midling
           kind
           between
           these
           two
           ,
           which
           cannot
           be
           any
           other
           than
           the
           Aethereal
           or
           Subtile
           Matter
           incorporated
           in
           the
           Atmosphere
           of
           our
           
             Terraqueous
             Globe
          
           ,
           which
           Matter
           by
           the
           diurnal
           Motion
           of
           the
           Earth
           is
           rapidly
           devolv'd
           from
           West
           to
           East
           perpetualy
           :
           Now
           you
           
           will
           presently
           wonder
           ,
           I
           do
           not
           doubt
           ,
           how
           that
           which
           moves
           from
           West
           to
           East
           should
           direct
           any
           Magnetical
           Body
           so
           as
           that
           its
           Poles
           should
           point
           directly
           North
           and
           South
           ,
           but
           have
           a
           little
           Patience
           .
           The
           existence
           of
           such
           Aethereal
           Matter
           I
           am
           confident
           you
           will
           not
           call
           in
           Question
           ,
           and
           that
           it
           is
           endu'd
           with
           a
           Scrutinous
           penetrating
           Nature
           may
           ,
           were
           it
           not
           trivial
           ,
           be
           Demonstrated
           from
           the
           very
           end
           and
           essence
           of
           it
           ;
           but
           still
           this
           Agent
           suffers
           under
           the
           Imputation
           of
           Insufficiency
           and
           Variability
           equally
           with
           that
           of
           
             Des
             Cartes
          
           ,
           and
           considered
           by
           it self
           undoubtedly
           it
           does
           so
           ,
           but
           considered
           with
           Circumstances
           as
           the
           Precipitance
           of
           its
           Motion
           ,
           the
           Disposition
           of
           the
           Parts
           of
           its
           Patient
           and
           the
           like
           ,
           it
           will
           answer
           your
           Expectation
           and
           Demands
           .
           Thus
           the
           Wind
           can
           manage
           the
           Sails
           of
           a
           Windmil
           ,
           and
           turn
           them
           round
           with
           ease
           ,
           but
           has
           no
           Power
           upon
           a
           Rock
           or
           a
           Mountain
           ;
           from
           hence
           it
           is
           evident
           therefore
           that
           this
           Agent
           must
           be
           driven
           with
           a
           due
           force
           of
           Motion
           ,
           and
           also
           that
           the
           Patient
           must
           have
           some
           of
           its
           Parts
           adapted
           for
           receiving
           and
           suffering
           the
           Impulse
           .
           Whoever
           takes
           a
           just
           estimate
           of
           the
           Earths
           Celerity
           in
           her
           diurnal
           Motion
           ,
           must
           be
           convinced
           that
           the
           Violence
           of
           such
           a
           Motion
           is
           able
           to
           effect
           great
           things
           ,
           and
           whoever
           remembers
           that
           the
           Motion
           of
           the
           Aethereal
           Matter
           about
           the
           
             Earths
             Superficies
          
           must
           be
           proportionably
           quicker
           as
           that
           is
           Degrees
           fluider
           ,
           must
           also
           be
           satisfy'd
           of
           the
           abilities
           of
           such
           Matter
           to
           penetrate
           all
           the
           accessible
           passages
           of
           those
           Bodies
           ,
           which
           occur
           in
           its
           course
           and
           to
           rage
           and
           aestuate
           in
           them
           ,
           if
           they
           be
           not
           very
           regular
           and
           open
           .
        
         
           Having
           thus
           obtain'd
           an
           Agent
           ;
           there
           are
           two
           things
           next
           to
           be
           examin'd
           ,
           the
           one
           is
           whether
           this
           Agent
           when
           it
           is
           free
           and
           uninterrupted
           is
           capable
           of
           such
           an
           Administration
           ;
           The
           second
           is
           ,
           Whether
           though
           it
           be
           so
           of
           its
           self
           ,
           yet
           external
           Diversions
           and
           Disturbances
           may
           not
           frustrate
           and
           evacuate
           its
           Influence
           ,
           which
           Queries
           being
           both
           Answered
           ,
           I
           hope
           no
           further
           difficulties
           will
           remain
           .
           In
           order
           to
           clear
           the
           first
           ,
           I
           must
           give
           you
           to
           understand
           that
           many
           of
           the
           Particles
           of
           Magnetical
           Bodies
           are
           like
           so
           many
           Tendrils
           or
           little
           Springs
           ,
           Taper
           and
           Tortuous
           ,
           which
           in
           regard
           of
           the
           Internal
           Disposition
           and
           Posture
           of
           Magnetical
           Bodies
           ,
           
           and
           the
           many
           anomalous
           Ramosities
           into
           which
           the
           Parts
           of
           them
           spread
           themselves
           ,
           I
           may
           expect
           to
           be
           easily
           granted
           .
           The
           Body
           of
           the
           Aethereal
           Matter
           therefore
           rushing
           into
           the
           Pores
           of
           the
           Magnetical
           Bodies
           ,
           and
           there
           labouring
           to
           exert
           its
           self
           on
           all
           sides
           ,
           and
           obtain
           a
           free
           Passage
           or
           a
           convenient
           Receptacle
           ,
           distends
           and
           explicates
           these
           little
           Springs
           which
           lie
           ranged
           in
           one
           and
           the
           same
           order
           ,
           from
           this
           Pole
           to
           that
           Pole
           of
           the
           Magnetical
           Body
           ,
           the
           consequence
           of
           which
           distention
           can
           not
           be
           a
           direct
           Progressive
           Motion
           of
           the
           Body
           ,
           because
           then
           all
           parts
           of
           these
           Springs
           must
           equally
           resist
           the
           Impulses
           of
           the
           Aethereal
           Matter
           ,
           but
           being
           of
           a
           Taper
           form
           ,
           larger
           and
           stronger
           toward
           the
           Radix
           of
           them
           than
           toward
           their
           Summity
           or
           Cuspis
           ,
           (
           forgive
           my
           Pedantry
           where
           I
           cannot
           help
           it
           ,
           )
           the
           finer
           and
           weaker
           parts
           of
           them
           suffer
           a
           readier
           or
           more
           forcible
           Expansion
           or
           Diastole
           than
           the
           larger
           and
           radical
           ,
           whereupon
           ensues
           insted
           of
           a
           Progressive
           Motion
           a
           Deflexion
           or
           Distortion
           of
           the
           Springs
           themselves
           ,
           and
           of
           the
           Continuum
           to
           which
           they
           adhere
           .
           For
           instance
           ,
           If
           the
           Radix
           of
           the
           Spring
           of
           a
           Watch
           were
           fastened
           to
           a
           peice
           of
           Wood
           or
           Iron
           ,
           when
           the
           Summity
           or
           lesser
           Parts
           of
           that
           Spring
           were
           distended
           and
           display'd
           ,
           it
           would
           not
           carry
           the
           Wood
           or
           Iron
           at
           the
           end
           of
           it
           in
           a
           direct
           Motion
           to
           any
           Point
           just
           before
           it
           ,
           but
           it
           would
           turn
           and
           move
           it
           round
           within
           the
           Limits
           of
           the
           same
           Area
           ,
           on
           which
           it
           lay
           before
           the
           Terminating
           weaker
           Parts
           were
           expanded
           ;
           and
           this
           Distention
           may
           very
           easily
           be
           effected
           by
           the
           Vehemency
           and
           Agitation
           of
           the
           Aethereal
           Matter
           ,
           which
           (
           to
           make
           a
           gross
           Comparison
           )
           Acts
           as
           vigorously
           upon
           them
           as
           the
           Wind
           in
           a
           crop
           of
           Corn
           ,
           or
           among
           the
           sprigs
           of
           Trees
           .
           When
           therefore
           the
           Poles
           of
           Magnetical
           Bodies
           are
           thus
           deflected
           to
           the
           Points
           of
           North
           and
           South
           ,
           the
           equal
           urgency
           of
           the
           Influx
           of
           the
           accessory
           Aethereal
           Matter
           upon
           all
           Parts
           of
           the
           Magnetical
           Body
           ,
           destroys
           the
           Strength
           of
           the
           Impression
           ,
           and
           stays
           its
           Motion
           at
           just
           that
           Instant
           ;
           for
           it
           must
           be
           remembred
           that
           the
           sides
           of
           the
           Magnet
           have
           not
           Pores
           fit
           to
           receive
           the
           Aethereal
           Matter
           ,
           which
           therefore
           upon
           impaction
           flows
           round
           it
           in
           a
           Vortical
           manner
           ,
           as
           shall
           be
           better
           explain'd
           hereafter
           .
           So
           the
           first
           dificulty
           disappears
           ,
           the
           second
           follows
           ,
           Whether
           
           though
           our
           Agent
           be
           capacitated
           ,
           yet
           external
           Diversions
           and
           Disturbances
           may
           not
           frustrate
           its
           Influence
           .
           The
           Cartesians
           I
           hope
           will
           not
           be
           the
           Men
           that
           start
           this
           Quere
           ,
           their
           Doctrine
           of
           the
           Loadstone
           labouring
           under
           the
           same
           or
           a
           worse
           disadvantage
           ;
           for
           if
           external
           Commotions
           as
           of
           the
           Wind
           ,
           &c.
           can
           confound
           the
           order
           and
           irritate
           the
           Operation
           of
           our
           Aethereal
           Matter
           ,
           whose
           Motion
           is
           so
           certain
           ,
           regular
           ,
           strong
           and
           unintermitted
           ;
           what
           will
           become
           of
           their
           
             Corpuscula
             Striata
          
           or
           Pennata
           ,
           they
           being
           not
           only
           obnoxious
           to
           accidental
           Ruffles
           and
           Perturbations
           ,
           but
           continually
           thwarted
           and
           Transverst
           by
           this
           flux
           of
           our
           Subtile
           Matter
           ?
           But
           I
           am
           persuaded
           we
           are
           both
           out
           of
           danger
           from
           Storms
           of
           every
           kind
           ,
           and
           need
           not
           shrink
           at
           the
           rage
           of
           Whirlwinds
           and
           Hurricans
           ,
           for
           such
           is
           the
           minuteness
           and
           velocity
           of
           our
           Agents
           that
           they
           make
           their
           way
           thro'
           all
           Opposition
           :
           like
           an
           Arrow
           in
           the
           Aire
           ,
           or
           a
           good
           Keel
           through
           the
           Waves
           ,
           or
           as
           the
           Sunbeams
           directly
           dart
           thro'
           the
           Atmosphere
           many
           times
           when
           't
           is
           vext
           and
           tost
           with
           the
           Winds
           ;
           which
           last
           Similitude
           carries
           the
           most
           in
           it
           ,
           on
           account
           of
           the
           vicinity
           between
           the
           matter
           of
           the
           Sunbeams
           and
           our
           Subtile
           or
           Aethereal
           Matter
           ;
           And
           thus
           we
           are
           past
           the
           two
           Impregnable
           Wards
           of
           this
           Inchanted
           Labyrinth
           .
        
         
           You
           will
           look
           perhaps
           that
           I
           should
           examine
           all
           the
           instances
           and
           Energies
           of
           Magnetical
           Bodies
           ,
           and
           should
           solve
           every
           particular
           Phaenomenon
           by
           this
           Hypothesis
           ,
           but
           if
           you
           do
           you
           will
           be
           deceived
           ,
           for
           I
           am
           not
           yet
           so
           prodigal
           of
           my
           Time
           or
           of
           my
           Paper
           ,
           which
           of
           late
           is
           very
           considerably
           risen
           ,
           as
           I
           suppose
           you
           have
           e're
           this
           experienced
           ,
           and
           therefore
           am
           of
           Opinion
           that
           the
           explication
           of
           these
           Five
           Properties
           following
           may
           suffice
           .
        
         
           First
           ,
           the
           Magnet
           (
           for
           now
           we
           come
           to
           particular
           cases
           )
           if
           it
           be
           unrestrain'd
           and
           have
           its
           just
           Liberty
           ,
           will
           turn
           about
           till
           its
           North
           Pole
           directly
           answers
           the
           South
           Pole
           of
           the
           Earth
           ,
           and
           its
           South
           Pole
           the
           North
           Pole
           of
           the
           Earth
           :
           Of
           which
           conversion
           I
           need
           not
           repeat
           to
           you
           the
           cause
           ,
           having
           already
           so
           lately
           and
           largely
           spoke
           of
           it
           .
        
         
           Secondly
           ,
           If
           two
           Magnets
           lye
           at
           a
           convenient
           distance
           one
           from
           the
           other
           ,
           and
           their
           Poles
           be
           disposed
           for
           their
           Accession
           ,
           as
           when
           the
           North
           Pole
           of
           the
           one
           faces
           the
           
           South
           Pole
           of
           the
           other
           ,
           or
           the
           South
           Pole
           of
           the
           one
           faces
           the
           North
           Pole
           of
           the
           other
           ,
           they
           will
           close
           ,
           and
           if
           their
           Poles
           are
           laid
           just
           contrary
           wise
           they
           mutually
           retreat
           ,
           for
           you
           must
           know
           the
           Aethereal
           Matter
           which
           effects
           to
           move
           in
           a
           Mathematicaly
           Circular
           Line
           ,
           upon
           invading
           the
           sides
           of
           the
           Magnet
           ,
           finding
           few
           or
           no
           Pores
           to
           receive
           it
           ,
           the
           main
           course
           or
           grain
           of
           the
           Pores
           lying
           extended
           from
           Pole
           to
           Pole
           ,
           deviates
           from
           its
           regular
           Line
           of
           Motion
           and
           flowing
           round
           all
           parts
           of
           the
           Magnets
           Superficies
           ,
           falls
           into
           a
           kind
           of
           Vortex
           on
           all
           sides
           of
           the
           inclosed
           Body
           ;
           when
           therefore
           two
           Magnets
           are
           situate
           at
           such
           a
           distance
           off
           each
           other
           that
           the
           intermediate
           Space
           is
           too
           close
           and
           narrow
           to
           Transmit
           the
           influxes
           of
           so
           much
           of
           the
           Aethereal
           Matter
           as
           is
           carried
           round
           the
           approximated
           Poles
           of
           both
           
           Magnet's
           ,
           the
           Influxes
           unite
           and
           generate
           one
           Vortex
           common
           to
           them
           both
           ,
           which
           cannot
           come
           to
           pass
           but
           at
           the
           same
           time
           the
           deviation
           of
           the
           Aethereal
           Matter
           from
           its
           regulare
           line
           of
           Motion
           will
           encrease
           ,
           and
           consequently
           with
           it
           its
           Propensity
           to
           recover
           it
           again
           ,
           whereupon
           must
           ensue
           a
           stronger
           Impression
           and
           Protrusion
           than
           ever
           upon
           the
           exteriour
           Poles
           of
           both
           Magnets
           ,
           they
           being
           the
           Points
           of
           its
           widest
           deviation
           ,
           and
           to
           their
           Impression
           the
           Magnets
           giving
           way
           immediatly
           close
           ,
           so
           that
           the
           nearer
           they
           lie
           to
           one
           another
           ,
           the
           stronger
           is
           the
           Impression
           upon
           their
           exteriour
           Poles
           ,
           the
           weaker
           the
           resistance
           of
           the
           Interposing
           Matter
           ,
           the
           fuddainer
           their
           Concourse
           ,
           and
           the
           firmer
           their
           Unition
           ,
           
             &
             vice
             versâ
          
           .
           The
           requisiteness
           of
           their
           Dinominal
           Poles
           facing
           one
           another
           is
           plain
           ,
           because
           that
           Position
           which
           is
           natural
           to
           them
           ,
           separately
           consider'd
           ,
           cannot
           but
           be
           the
           most
           suitable
           for
           their
           Unition
           ;
           and
           the
           reason
           of
           their
           flying
           one
           another
           when
           their
           Cognomininal
           Poles
           are
           Approximated
           is
           this
           .
           The
           Central
           Parts
           of
           the
           Vorticle
           wherein
           both
           Magnets
           are
           immers'd
           ,
           conform
           as
           in
           all
           Vortexes
           whatsoever
           to
           the
           Motion
           of
           the
           exteriour
           Parts
           ,
           and
           that
           is
           as
           we
           have
           just
           observ'd
           ,
           a
           Deviation
           or
           Distraction
           or
           equal
           Division
           of
           the
           Vortex
           it self
           toward
           either
           Point
           North
           or
           South
           ,
           and
           such
           by
           consequence
           must
           the
           distribution
           be
           of
           the
           Central
           Parts
           of
           the
           Vortex
           ,
           and
           therefore
           acting
           with
           equal
           strength
           on
           both
           sides
           ,
           if
           those
           of
           one
           
           side
           ,
           that
           is
           toward
           the
           Polar
           parts
           of
           the
           Magnet
           ,
           on
           one
           side
           meet
           with
           so
           disagreable
           a
           Texture
           of
           Parts
           ,
           as
           obliges
           them
           to
           retire
           unsuccesful
           ,
           and
           those
           which
           act
           on
           the
           other
           side
           or
           toward
           the
           Polar
           parts
           of
           the
           opposite
           Magnet
           are
           more
           mildly
           received
           ,
           as
           it
           will
           be
           when
           their
           Denominal
           Poles
           are
           placed
           over
           against
           one
           another
           ,
           this
           would
           be
           apt
           to
           drive
           away
           one
           of
           the
           Magnets
           from
           the
           other
           ,
           were
           not
           the
           Impression
           of
           the
           external
           Parts
           of
           the
           same
           common
           Vorticle
           more
           powerful
           than
           that
           of
           such
           Central
           Parts
           ;
           but
           when
           the
           Cognominal
           Poles
           of
           both
           Magnets
           face
           each
           other
           ,
           the
           Impression
           of
           the
           Central
           Parts
           of
           the
           Vortex
           on
           both
           sides
           will
           be
           equal
           ,
           and
           their
           mutual
           renitency
           will
           as
           easily
           overpower
           the
           Impression
           of
           the
           external
           Parts
           of
           the
           Vortex
           ,
           as
           a
           Man
           that
           should
           be
           to
           bend
           the
           Body
           of
           a
           young
           Tree
           ,
           though
           with
           one
           Hand
           singly
           he
           were
           not
           able
           to
           move
           it
           ,
           yet
           when
           he
           set
           his
           other
           Hand
           against
           the
           Body
           of
           another
           Tree
           of
           equal
           growth
           ,
           would
           find
           it
           in
           his
           power
           to
           bend
           them
           both
           .
           The
           following
           Draught
           will
           Illustrate
           this
           .
        
         
         
           Thirdly
           ,
           If
           two
           Magnets
           be
           duly
           dispos'd
           ,
           one
           will
           support
           and
           sustain
           the
           other
           in
           the
           Air
           ,
           as
           also
           a
           Magnet
           will
           in
           like
           manner
           sustain
           a
           peice
           of
           Iron
           ,
           which
           is
           very
           easily
           accounted
           for
           ,
           the
           second
           Phaenomenon
           being
           well
           understood
           ,
           for
           being
           first
           united
           in
           the
           manner
           there
           describ'd
           ,
           their
           Cohaesion
           
           must
           be
           as
           valid
           and
           tenacious
           by
           reason
           of
           the
           pressure
           of
           the
           Aethereal
           Matter
           upon
           their
           Superficies
           ,
           as
           is
           the
           Cohaesion
           of
           two
           Polished
           Marbles
           thro'
           the
           compression
           of
           the
           External
           Air
           ;
           and
           the
           same
           is
           to
           be
           said
           of
           Iron
           ,
           which
           as
           was
           hinted
           before
           to
           you
           ,
           seems
           to
           be
           but
           a
           Bastard
           Loadstone
           .
        
         
           Fourthly
           ,
           A
           Loadstone
           will
           Communicate
           its
           Faculties
           and
           Affections
           to
           Iron
           :
           for
           you
           are
           to
           remember
           that
           Iron
           is
           of
           a
           Congenial
           Nature
           with
           the
           Magnet
           it self
           ,
           and
           that
           therefore
           it
           requires
           but
           a
           little
           Modification
           to
           render
           it
           compleatly
           Magnetical
           ,
           which
           Modification
           it
           under
           goes
           from
           the
           Loadstone
           as
           it
           lies
           in
           its
           proper
           posture
           ,
           for
           altho'
           the
           Loadstone
           does
           not
           then
           abound
           with
           or
           discharge
           the
           Aethereal
           Matter
           in
           such
           Plenty
           as
           when
           it
           is
           laid
           with
           it
           
             Poles
             East
          
           ,
           and
           West
           ,
           yet
           a
           more
           moderate
           Concoction
           and
           Ebullition
           of
           the
           same
           kind
           of
           Matter
           continues
           ,
           which
           Concoction
           being
           effected
           among
           the
           Springs
           of
           the
           Magnet
           ,
           the
           Aethereal
           Matter
           which
           is
           agitated
           and
           Concocted
           must
           of
           necessity
           receive
           such
           a
           peculiarity
           of
           Motion
           as
           the
           Passages
           lying
           among
           and
           between
           those
           Springs
           will
           Model
           it
           into
           ,
           and
           issuing
           out
           of
           the
           
             Magnets
             Poles
          
           in
           such
           a
           Motion
           it
           enters
           the
           Pores
           of
           the
           Applicated
           Iron
           ,
           where
           finding
           at
           once
           a
           larger
           Liberty
           (
           the
           Pores
           of
           Iron
           being
           more
           lax
           than
           those
           of
           the
           Magnet
           )
           and
           also
           new
           Recruits
           of
           other
           Aethereal
           Matter
           ,
           which
           enters
           the
           large
           Pores
           of
           Iron
           at
           all
           parts
           of
           it
           alike
           till
           such
           Iron
           is
           Magneticis'd
           ,
           it
           aestuates
           with
           greater
           vigour
           ,
           joins
           forces
           with
           the
           Aethereal
           Matter
           that
           it
           finds
           in
           the
           Iron
           ,
           Communicates
           to
           it
           the
           same
           Species
           of
           Motion
           ,
           and
           both
           in
           Conjunction
           ,
           Purge
           ,
           Polish
           ,
           Frame
           ,
           and
           in
           all
           respects
           prepare
           those
           Particles
           of
           the
           Iron
           which
           are
           capable
           of
           being
           wrought
           into
           Magnetical
           Springs
           ,
           and
           when
           by
           such
           a
           course
           they
           are
           wrought
           into
           those
           Springs
           ,
           the
           Iron
           becomes
           compleatly
           Magnetical
           ;
           for
           as
           the
           Coadjution
           of
           the
           Cock
           is
           required
           toward
           the
           Perfectionating
           those
           Seminal
           Principles
           the
           matter
           whereof
           rests
           in
           the
           Ovary
           of
           the
           Hen
           ,
           and
           without
           such
           Coadjution
           would
           prove
           at
           best
           Abortive
           :
           so
           there
           appears
           a
           necessity
           of
           the
           Irons
           receiving
           the
           influx
           of
           the
           Aethereal
           Matter
           ,
           which
           was
           Model'd
           in
           the
           Magnet
           ,
           to
           beget
           such
           a
           Motion
           of
           its
           own
           Aethereal
           Matter
           
           as
           might
           compleat
           its
           Magnetism
           ,
           which
           Analogy
           I
           think
           fairly
           explains
           the
           whole
           Supposition
           .
        
         
           Fifthly
           ,
           Magnetical
           Bodies
           are
           divested
           of
           their
           Qualities
           either
           by
           Rust
           or
           Excandefaction
           ,
           or
           if
           they
           are
           confin'd
           any
           length
           of
           time
           to
           a
           forc'd
           and
           violent
           Position
           :
           The
           first
           partly
           Corroding
           ,
           partly
           Distempering
           ,
           and
           partly
           Incumbering
           the
           little
           Springs
           ;
           the
           second
           utterly
           destroying
           them
           ,
           and
           the
           third
           suffering
           Malignant
           and
           Heterogeneous
           Matter
           to
           disturb
           and
           Choak
           them
           .
        
         
           So
           much
           good
           Friend
           ,
           for
           our
           Physical
           consideration
           of
           Magnetical
           Bodies
           ,
           for
           I
           am
           very
           loath
           to
           examine
           all
           those
           other
           Phaenomena
           ,
           which
           patienter
           Naturalists
           in
           better
           times
           have
           enumerated
           ,
           especially
           since
           those
           already
           discussed
           are
           the
           most
           difficultly
           solv'd
           of
           any
           of
           them
           .
           If
           you
           are
           angry
           to
           see
           coarse
           Fare
           garnished
           with
           such
           variety
           of
           hard
           Words
           ,
           which
           I
           must
           confess
           is
           a
           fault
           much
           in
           vogue
           among
           our
           Philosophers
           ,
           and
           after
           all
           is
           no
           more
           than
           a
           
             Vacuum
             Disseminatum
          
           in
           their
           Books
           ,
           I
           must
           e'n
           tell
           you
           I
           could
           not
           help
           it
           ;
           Delicacy
           of
           Subject
           and
           Newness
           of
           Notion
           (
           such
           as
           it
           is
           )
           would
           have
           it
           so
           ;
           nor
           can
           I
           take
           offence
           if
           my
           Opinion
           in
           a
           Matter
           whereof
           many
           have
           wrote
           much
           to
           little
           purpose
           ,
           merit
           not
           your
           Approbation
           .
           To
           feed
           my
           imagination
           with
           hopes
           of
           success
           after
           the
           disappointments
           of
           such
           Heroes
           of
           Philosophy
           ,
           were
           as
           Sawcy
           and
           Presumptious
           ,
           as
           it
           would
           have
           been
           in
           one
           of
           
           Hercules's
           Wives
           to
           pretend
           to
           beat
           her
           Husband
           after
           he
           had
           Conquered
           his
           twelve
           Labours
           ;
           nay
           ,
           so
           little
           do
           I
           promise
           my self
           of
           any
           thing
           like
           it
           ,
           that
           I
           am
           very
           apt
           to
           believe
           all
           our
           Inquiries
           into
           the
           Causes
           of
           Magnetical
           Operations
           are
           next
           to
           desperate
           ,
           and
           will
           ever
           be
           so
           .
           Indeed
           the
           All-wise
           Authour
           of
           Nature
           seems
           to
           have
           design'd
           them
           not
           so
           much
           Objects
           of
           our
           Curiosity
           ,
           as
           matter
           of
           our
           Admiration
           ,
           and
           I
           might
           add
           of
           our
           Imitation
           ;
           for
           where
           is
           there
           that
           Emblem
           or
           Hieroglyphick
           which
           in
           so
           lively
           Colours
           represents
           the
           Passions
           and
           Morals
           of
           Mankind
           ?
           The
           Malicious
           and
           Quarelsome
           World
           see
           themselves
           Mock'd
           while
           they
           behold
           two
           Stones
           fly
           on
           another
           for
           no
           other
           Reason
           than
           an
           innate
           Natural
           Aversation
           .
           again
           the
           Covetous
           may
           blush
           to
           see
           
           in
           the
           manner
           of
           the
           
           Magnet's
           Communication
           the
           Picture
           of
           one
           at
           Home
           ,
           who
           instead
           of
           spending
           any
           part
           of
           his
           Treasure
           upon
           himself
           ,
           spends
           himself
           wholly
           upon
           that
           .
           again
           it
           's
           perpetual
           Affection
           of
           the
           same
           Points
           of
           the
           Hemisphere
           ,
           exposes
           the
           Ambitious
           and
           Voluptuous
           ,
           whose
           Souls
           are
           so
           link'd
           to
           Greatness
           and
           Pleasure
           ,
           that
           they
           seem
           to
           have
           forfeited
           the
           Priviledge
           of
           a
           free
           Will.
           On
           the
           other
           Hand
           it
           tacitly
           teaches
           Rational
           and
           Sober
           Men
           the
           necessity
           of
           directing
           their
           Designs
           and
           Actions
           all
           to
           one
           end
           ,
           and
           in
           Order
           thereto
           of
           preserving
           a
           mutual
           Unanimity
           amongst
           themselves
           .
           As
           therefore
           the
           Magnet
           seems
           primarily
           ,
           and
           especially
           to
           be
           deputed
           to
           this
           Moral
           use
           ,
           for
           in
           the
           whole
           Republick
           of
           Nature
           ,
           there
           is
           not
           an
           inanimate
           Body
           more
           edifying
           ,
           nor
           certainly
           an
           animate
           more
           inscrutable
           ,
           so
           does
           it
           discharge
           this
           function
           in
           a
           manner
           most
           punctual
           and
           at
           the
           same
           time
           most
           unintelligible
           .
           and
           in
           this
           Instance
           as
           in
           many
           others
           ,
           the
           Commodiousness
           and
           Utility
           of
           the
           Phaenomena
           compensate
           for
           their
           Latency
           and
           Obscurity
           ;
           for
           as
           for
           those
           artificial
           Purposes
           we
           have
           taught
           it
           to
           serve
           ,
           particularly
           in
           Navigation
           ,
           they
           do
           not
           appear
           to
           have
           been
           the
           Genuin
           and
           Natural
           ends
           of
           it
           they
           being
           altogether
           Precarious
           and
           Contingent
           ;
           so
           that
           the
           study
           of
           its
           Instructions
           is
           much
           more
           safe
           and
           benificial
           than
           the
           study
           of
           its
           Construction
           ▪
           and
           did
           Philosophers
           observe
           this
           Rule
           in
           all
           their
           Philosophical
           enquiries
           ,
           it
           would
           make
           much
           more
           for
           the
           credit
           of
           their
           Profession
           ,
           and
           be
           of
           greater
           advantage
           to
           Mankind
           in
           general
           ;
           we
           should
           have
           less
           of
           their
           Errors
           and
           more
           of
           their
           Reason
           ;
           and
           that
           Science
           which
           has
           lost
           its
           Reputation
           by
           its
           Fallacies
           and
           Presumptions
           ,
           would
           by
           these
           means
           more
           than
           recover
           it
           ;
           nay
           ,
           doubtless
           a
           clear
           Knowledg
           of
           the
           true
           uses
           of
           things
           ,
           would
           give
           us
           a
           better
           Light
           into
           the
           Nature
           of
           them
           ,
           then
           their
           Nature
           gives
           us
           into
           the
           uses
           of
           them
           .
           But
           I
           decline
           the
           Prosecution
           of
           this
           Argument
           as
           having
           been
           so
           Particularly
           and
           Elegantly
           manag'd
           in
           the
           Case
           before
           you
           ,
           by
           a
           learned
           Gentleman
           of
           the
           last
           Age
           ;
           this
           only
           I
           will
           add
           ,
           That
           whether
           any
           or
           all
           our
           Disquisitions
           of
           this
           kind
           succeed
           or
           fail
           ,
           we
           shall
           have
           still
           new
           Motives
           of
           expressing
           our
           Praise
           and
           Veneration
           to
           the
           Almighty
           
           Lord
           of
           all
           things
           ;
           our
           Praise
           when
           they
           succed
           for
           his
           having
           permitted
           the
           Children
           of
           Men
           to
           know
           so
           much
           of
           the
           Methods
           of
           his
           Providence
           ,
           and
           our
           Veneration
           where
           they
           fail
           .
           For
           who
           can
           do
           other
           than
           adore
           and
           revere
           the
           infinite
           Power
           and
           Wisdom
           of
           the
           Creator
           ,
           When
           the
           noblest
           of
           humane
           Faculties
           are
           not
           able
           with
           the
           nicest
           Inspection
           to
           make
           any
           satisfactory
           discovery
           of
           the
           Frame
           and
           Constitution
           of
           the
           Creature
           .
           Let
           therefore
           that
           Orizon
           with
           which
           we
           lately
           terminated
           our
           Discourse
           ,
           conclude
           this
           Letter
           .
           That
           the
           Omnipotent
           Authour
           of
           all
           things
           would
           bestow
           on
           his
           Rational
           Creatures
           with
           their
           Knowledg
           a
           proportionable
           largess
           of
           Grace
           to
           use
           it
           to
           his
           Honour
           and
           Glory
           ,
           and
           our
           own
           Spiritual
           Improvement
           .
           I
           hope
           all
           our
           Friends
           in
           the
           Country
           thrive
           .
        
         
           
             
               March
               16
               ,
               1696
               /
               7.
               
            
          
           
             I
             am
             ,
             Sir
             ,
             Yours
             ,
             &c.
             
          
        
         
           FINIS
           .