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Or
,
the
Mathematicall
Ring
Sph●ricall
Triangles
Geometrie
,
Horo●ogographie
,
Geographie
,
Fortification
,
Navigation
,
A●●ronomie
,
&c.
R.
Delamain
sacred
presence
gracious
Majestie
blessed
eye
Noble
Lo.
Nepeir
Baron
of
Marcheston
Sines
,
Tangenis
,
Secants
,
&c.
practicall
uses
instrumentall
Projection
Mathematicall
Ring
decuplating
the
Circles
sacred
Majestie
Mathematicall
operations
extraction
of
Roots
Sines
,
Tangents
,
secants
Tables
of
Logarythmes
Circular
motion
gracious
acceptance
publicke
good
honest
labours
loyall
subjects
sacred
feete
Instrumentall
Projection
proportionall
operations
Logarythmes
Circular
Mathematicall
Ring
proportionall
numbers
Logarythmall
projection
Loga●●th●es
●f
●●●bers
L●●arythmes
of
sines
Logarythmes
of
Tangents
Quadruplicities
of
Circles
Logarythmes
of
●●mbers
Circle
of
sines
T.
T.
Logarythmes
of
Tangents
Circle
of
Tangents
Numbers
,
Sines
li●es
of
proportions
Circles
of
Numbers
,
Sines
,
and
Tangents
,
Circles
of
proportion
Logarythmes
of
numbers
Logarythmes
of
Sines
Logarythmes
of
Tangents
Naturall
sympathy
Gunters
Invention
Ring
on
a
plate
making
of
the
worke
Proiection
on
a
plaine
Instrument
.
First
Instrument
;
Secondly
Circle
mooveable
Circle
fixed
N
,
N
Circular
plaine
fixed
Circle
scheme
A
fixed
Circle
single
projection
projection
.
But
expedition
in
operation
Authors
assertion
projection
without
an
Index
Mathematicall
Art
single
proiection
mooveable
and
fixed
Circle
(
the
months
in
a
yeare
)
(
the
weekes
in
a
yeare
)
(
the
dayes
in
a
yeare
)
monthly
,
weekely
dayly
expences
Archimedes
Proportion
summes
of
money
Circle
of
yeares
(
in
homogeniall
things
regular
Plaines
Circle
of
numbers
Sphericall
Triangles
Geometrie
,
Astronomie
,
Navigation
,
Fortification
,
Horot
ogographie
,
Geographie
,
&c.
Tropicall
point
Sunnes
distance
Equinoctiall
points
sunnes
declination
Equinoctiall
points
Equinoctiall
points
sine
Complement
sine
Complement
Declining
plaines
stiles
heights
declining
plaines
sine
Complement
Tropicall
point
Suns
distance
Equinoctionall
points
Tangent
complement
Tropicall
point
difference
of
ascention
Suns
position
Suns
declination
fixed
Circle
fixed
Circle
divulged
assertion
single
projection
naturall
sines
fixed
Circle
inspection
of
the
eye
onely
Circle
of
numbers
,
sines
proportions
in
Buildings
fortifications
,
measurations
Circle
of
numbers
summe
of
money
Meridi●nall
plaine
Circle
of
numbers
stiles
hight
equall
houres
houre
distances
Circle
of
Numbers
in
the
fixed
.
verticall
dyall
verticall
Dyall
Circle
of
Numbers
ten
regular
figures
regular
figures
Circles
circumscribed
inscribed
diameters
regular
figures
ten
regular
figures
Regular
notes
Circle
of
numbers
regular
figurative
quantities
are
equall
Regular
bodies
plaine
Triangles
Circle
of
numbers
Regular
bodies
sphears
Circumscribing
diameters
solids
circumscribed
plaine
figure
Circle
of
numbers
diameter
,
Axis
homogeniall
figure
Circle
of
numbers
Bodies
convexities
modestie
of
the
Author
graduall
numbers
Instrumentall
proiection
fixed
Circle
many
occasions
good
wine
needs
no
Bush
mooveable
Circle
fixed
Circle
Authors
divulgation
fixed
Circle
knowne
skill
Systeme
of
Mathematicall
Logarythmall
projection
Circular
Instrumentall
practise
worlds
rumor
Logarythmall
projection
Circular
best
things
cryticks
,
Diogenes
like
mantle
of
peace
circumstances
.
Veritas
non
quaerit
Angulos
.
Mathematicall
Ring
Circles
of
my
Ring
Projection
inlarged
Instrumentall
Invention
Practicall
use
Mathematicall
Ring
Arithmeticke
,
Geometrie
,
Astronomy
,
Horolographie
,
Navigation
,
&c
,
FOr
the
first
Circle
of
equall
parts
T
T.
Circle
of
Tangents
Numbers
,
Sines
Logarythmes
of
Numbers
Circle
of
Numbers
Circle
of
equall
parts
Table
of
Logarythmes
Numbers
N
Table
of
Logarythmes
Circle
of
equall
parts
Numbers
N
Table
of
Logarythmes
Table
of
Logarythmes
Table
of
Logarythmes
Circle
of
equall
parts
Center
A
Table
of
Logarythmes
Circle
of
equall
parts
Circle
N
Table
of
Logarythmes
Table
of
Logarythmes
Circle
N
And
thus
Circles
of
Numbers
Circle
of
Sines
To
divide
the
Circle
of
Sines
,
Table
of
Sines
Line
of
Conjunction
,
E
N
,
In
the
Table
of
Sines
Circle
of
Sines
Circle
of
equall
parts
Circle
of
Sines
Line
of
Conjunction
E
,
N.
Table
of
Sines
Circle
of
Sines
Circle
of
equall
parts
Circle
of
Sines
S
Circle
of
Sines
Circle
of
Tangents
T
Circle
T
the
line
of
Conjunction
Circle
of
Tangents
T
Circle
of
Tangents
the
line
of
Conjunction
Circle
of
equall
parts
Circle
of
Tangents
T
E
,
in
the
Circle
of
equall
parts
,
Circle
of
Tangents
T
the
line
of
Conjunction
the
line
of
Conjunction
Circle
of
equall
parts
Circle
T
the
line
of
Conjunction
Circles
of
my
Ring
face
of
the
Ring
the
Circle
of
Numbers
the
Circle
of
Sines
Astronomy
,
or
Geometrie
Logarythmall
Tangents
Logarythmall
Sines
Meridian
inlarged
Latitude
,
Longitude
and
distance
in
Nauticall
operations
fixed
Circles
fixed
Circle
fixed
Circle
the
Mooveable
Circle
fixed
Circle
mooveable
Circles
broad
Circle
doubling
,
tripling
,
quadrupling
,
quintupling
,
decupling
,
centupling
decuplation
,
centuplation
Tables
of
Logarythmes
by
that
number
which
you
intend
to
have
the
projection
enlarged
upon
,
according
to
a
Ratio
,
or
proportion
assigned
,
and
the
Quotient
shall
shew
the
number
of
parts
that
one
single
Circle
shall
be
divided
into
Circle
of
equall
parts
the
line
of
conjunction
the
line
of
conjunction
the
Circle
of
numbers
the
line
of
conjunction
Table
of
Logarythmes
the
line
of
conjunction
the
line
of
conjunction
the
line
of
Conjunction
E.
in
the
single
projection
the
whole
Circle
of
Numbers
the
circle
of
Sines
Mathematical
Ring
single
Index
Circle
of
equall
parts
Index
,
&c.
mooveable
Circle
mooveable
Circle
The
Circle
of
degrees
and
Calender
.
Circle
of
equall
parts
T
The
Circle
of
Tangents
T
The
Circle
of
Tangents
S.
The
Circle
of
Sines
D.
The
Circle
of
Decimals
N.
The
Circle
of
numbers
N.
The
Circle
of
Numbers
E.
The
Circle
of
equated
figurs
,
&
bodies
.
S.
The
Circle
of
Sines
T
The
Circle
of
Tangents
T
The
Circle
of
Tangents
Y.
The
Circle
of
time
,
yeares
,
and
monethes
.
FIrst
,
the
Circle
of
equall
parts
on
the
fixed
,
Circle
of
equall
parts
it
was
scarce
of
any
use
,
but
onely
that
by
helpe
thereof
the
given
distances
of
number
may
be
multiplyed
,
or
divided
as
neede
requires
sharpe
sighted
Circle
of
equall
parts
Equinoctiall
Circle
Meridian
Circle
Circle
of
Latitudes
the
Circle
of
time
T
T.
Circle
of
Tangents
line
of
conjunction
E
N
Circle
of
Tangents
Circle
of
Tangents
Circle
of
Tangents
T
T
Circle
of
Tangents
Circle
of
Tangent
line
of
Conjunction
Circle
of
Tangents
Circle
of
fines
Circle
of
sines
Circle
of
sines
a
pound
of
money
Decimall
of
shillings
a
pound
of
money
Decimals
of
waight
platonicall
Bodies
feete
to
a
Pole
.
feete
to
a
Pole
.
feete
to
a
Pole
.
feete
to
a
Pole
.
Foote
of
Board
Foote
of
Timber
f.
t.
Foote
of
Timber
equated
Cir.
D.
Circles
Diameter
Cir.
c.
Circles
Circumference
Cyl
.
D
/
s
Cylindricall
.
solidite
Cyl
.
e
/
●
Cyl
.
d
/
f
Cylindricall
foote
measure
Cyl
.
●
/
f
Gage
for
wine
Gag
.
A
Gage
for
ale
Circle
of
Numbers
ten
tens
Hundreds
,
Tens
Circle
of
numbers
moveable
Circle
Circle
of
numbers
Circle
of
numbers
Definition
of
Logarithmes
Proportionales Logarithmi aequales habent differentias . Definitio . Necess● est igitur proportionales Logarithmos in proport●one Lincari distantias aequales habere .
There
is
such
proportion
betweene
any
whole
,
and
his
parts
,
as
betweene
the
like
whole
,
either
greater
or
lesser
,
and
his
parts
:
or
betweene
the
parts
and
the
parts
,
as
betweene
the
whole
and
the
whole
.
A.
B.
C.
D.
TO
finde
a
Line
that
shall
keepe
any
proportion
assigned
unto
another
line
given
.
viz.
B.
B.
C.
D.
E.
F.
G.
B
C.
viz.
B
D.
B
E.
B
F.
B
G.
B
H.
Golden
Rule
As
if
li.
doe
rent
Acres
of
Land
yearely
,
how
much
doth
the
yearely
Rent
of
Acres
come
to
For
the
working
of
this
and
all
others
,
fourth
number
third
number
first
:
Vel
contra
The
Rule
of
proportion
And
here
note
generally
third
number
first
number
fourth
number
second
number
third
number
first
number
fourth
number
second
number
Reciprocall
proportion
So
if
men
in
daies
,
will
doe
a
service
,
in
how
many
daies
shall
men
doe
it
Reciprocall
proportion
Againe
,
if
souldiers
are
victualed
for
moneths
,
how
many
men
may
it
serve
that
the
said
provision
may
last
If
I
lend
li.
for
moneths
,
if
I
should
borrow
of
him
li.
how
long
might
I
keepe
it
According
to
the
Statute
,
if
Wheat
beat
s.
the
quarter
,
the
penny
loafe
should
weigh
ounces
and
a
halfe
,
what
shall
it
now
weigh
,
if
in
case
wheat
be
at
the
Quarter
;
the
numbers
changed
into
decimals
will
be
thus
,
if
what
shall
A
Gallery
is
found
to
containe
in
the
walls
yards
,
how
many
yards
of
Tapestry
shall
hang
that
Gallery
of
quarters
broad
Ounces
of
yards
to
an
ounce
will
serve
to
lace
a
vesture
,
how
many
ounces
of
yards
to
an
ounce
will
doe
the
same
,
&c.
This
for
Lineary
Proportion
As
if
●he
Diamiter
of
a
Circle
be
and
the
Area
what
is
the
Area
of
another
Circle
whose
Diameter
is
If
a
peece
of
Land
of
Pole
square
be●worth
what
is
a
peece
of
Land
of
the
same
goodnesse
worth
,
which
is
Pole
square
every
way
If
a
peece
of
ground
of
paces
square
is
sufficient
to
lodge
an
Army
of
men
,
how
ma●y
men
shall
there
be
ledged
in
a
peece
of
ground
which
is
paces
square
Our
English
land
measure
is
foot
and
a
halfe
to
the
Pole
,
the
Irish
Pole
hath
foot
,
how
many
English
Acres
doth
Irish
Acres
make
As
admit
the
side
of
the
least
Cube
were
Inches
,
and
could
not
be
made
under
what
might
a
Cube
of
the
same
mettall
be
worth
that
is
but
one
inch
more
in
the
side
,
this
might
bee
applied
to
the
weight
,
worth
,
or
quantitie
of
other
Solids
.
A
Pe●ce
of
Inches
boare
or
Diameter
,
requires
for
her
charge
pound
of
Powder
,
what
quantity
of
Powder
will
serve
another
Peece
of
Inches
in
the
boare
There
are
two
Bullets
,
Globes
,
or
Cylenders
,
the
Diameter
of
the
one
is
inches
,
and
the
other
the
Diameter
is
inches
,
what
proportion
is
there
betweene
the
Solids
,
or
how
often
doth
the
greater
containe
the
lesser
.
MOve
the
Divisor
to
so
right
against
the
Dividend
in
the
moveable
,
is
the
quotient
in
the
fixed
.
So
if
it
were
further
required
,
how
many
daies
there
were
in
houres
,
or
any
other
number
:
So
if
it
were
demanded
how
many
yeares
there
is
in
daies
,
there
being
daies
in
the
yeare
IN
a
yeare
are
weeks
or
daies
.
If
J
would
know
the
weekly
expences
of
any
yearely
summe
of
money
.
Other
uses
upon
Division
to
finde
the
Scale
to
divide
the
Meridian
line
in
a
Sea
Chart
,
according
to
any
bredth
,
&
to
a
Latitude
assigned
.
M
ltiplier
So
if
be
multiplied
by
the
Product
will
be
but
two
places
:
But
if
were
to
bee
multiplied
by
To
multiply
Fractionall
Monetht
make
a
yeare
,
bring
1.
unto
it
,
so
right
against
any
monethly
expences
in
the
moveable
you
have
the
yearely
expences
in
the
fixed
according
to
the
note
Minutes
make
an
houre
Admit
lands
be
sold
at
yeares
Purchase
The
Instrument
being
at
this
stay
,
Logaryt●mall
Index
any
given
number
Circle
of
numbers
Logarythmall
numbers
meane
proportionalls
meane
proportionalls
Cubicke
numbers
meane
proportionalls
meane
proportionall
Circle
of
numbers
meane
proportionall
meane
proportionalls
square
Roote
meane
proportion
Cubicke
Roote
meane
proportionalls
Biquadrat
Roote
meane
proportionalls
given
number
,
&c.
meane
proportions
Logarythmes
of
numbers
Circle
of
equall
Circle
of
numbers
lesser
number
Circle
of
equall
parts
Q
A
A
Q
Circle
Q
Circle
of
equal
Q
A
meane
proportionoll
For
the
extraction
of
square
and
Cubicke
Roots
more
compendiously
,
Epistle
to
the
Reader
extraction
of
square
Rootes
number
given
odde
places
square
numbers
Cubicke
numbers
number
of
ternaries
meane
proportionalls
square
Roote
meane
proportion
NOte
if
the
two
Numbers
A
B
If
the
two
n●mbers
be
lent
for
two
yeares
and
at
the
end
thereof
were
received
what
was
taken
in
the
In
warlike
discipline
,
the
weakest
place
opposed
to
danger
,
is
supplied
with
strongest
force
.
To
finde
the
Scale
that
protracted
a
Plot
or
Building
by
.
Let
the
Rectangle
A
C
be
and
let
the
Scale
be
sought
for
by
which
it
was
protracted
or
plotted
:
A
B.
A
D.
A
B
A.
B.
C.
A.
B.
A.
C.
B.
Extraction
of
Cubicke
Roots
A
B
B
C
Mathematicall
Ring
A.
B.
C.
Logarithmall
signes
Logarithmall
Tangents
Logarithmall
signes
Sphericall
Triangles
Tropicall
point
ocular
inspection
Sunnes
longitude
Sunnes
declination
Sun
rising
Sun
setting
Sans
Declination
Suns
ascentionall
differen●e
Lineary
speech
propo●tionall
number●
ocular
inspection
Astronomicall
calculations
Richard
Delamain
The
Mathematicall
Ring
Richard
Delamain
ten
yeares
Astronomy
,
Horolographie
Dimensions
,
Navigation
,
Fortification
Table
A.
Table
B.
Table
C.
continuall
proportion
continuall
proportion
Table
D.
Table
E.
Table
G.
These
Instruments
are
made
in
siluer
or
Brasse
by
Iohn
Allen
neare
the
Sauoy
in
the
strand
The
mouable
Compasse
The
f●●
ed
Proiection
on
a
plaine
The
mouable
Proiection
In
a
Ring
M.
mouable
F.
fixed
Starres
Amplitude
Sunnes
Amplitude
Sunnes
A●titude
Verticall
Circle
Sunnes
Altitude
Sunnes
Altitude
Suns
Altitud●
Suns
Altitude
Glasses
,
Watches
Ascentionall
difference
fine
Complement
sine
Complement
sine
Complement
sine
Complement
difference
of
Meridians
Meridians
,
viz.
houre
distances
plaine
Triangle
right
Angles
angled
Triangle
Oblique
Angled
Triangle
The
sides
in
all
such
Triangles
,
beare
proportion
the
one
to
the
other
,
as
the
sines
of
their
opposite
Angles
doe
.
angled
Triangle
Golden
Rule
Golden
Rule
Golden
Rule
Golden
Rule
Golden
Rule
Sine
Complement
Circle
of
Numbers
Practicall
things
Richard
Newport
Constructio
.
First
Theorem
Pagr.
Ring
Page
Circle
of
Numbers
(
viz.
Rectangled
Triangle
Oblique
Triangle
Proportionall
Logarythmes
,
that
as
they
keepe
equall
differences
,
so
in
a
lineary
or
Circular
Instrumentall
projection
of
these
Logarythmes
,
Proportionall
numbers
shall
alwayes
have
equall
distances
,
fundamentall
ground
Conjunction
E.
T.
first
number
in
the
mooveable
second
number
second
number
lines
of
Coniunctions
fourth
proportionall
third
number
in
the
mooveable
of
Circles
second
numbers
line
of
conjunction
line
of
conjunction
first
number
lines
of
Conjunctions
lines
of
conjunctions
second
numbers
line
of
Conjunction
single
Projection
inlarged
Suns
declination
Suns
Amplitude
decuplated
revolutions
Meridionall
Altitude
declination
,
viz.
Suns
Declination
decuplated
Proiection
hundred
times
Proiection
of
Logarythmes
inlarged
decuplating
,
Centuplating
,
&c.
Circle
of
Tangents
yards
diameter
Astronomicall
Calculations
Prostaphereses
of
the
motions
untimely
birth
friendly
way
contumelious
aspertions
Horizontall
Quadrant
Logarythmes
Circular
Mathematicall
Ring
Mathematical
practises
Proportionall
numbers
untruths
,
delusions
bumbast
stuffe
Circles
of
my
Ring
Center
,
when
another
imitating
thereof
,
did
so
fit
i●
,
whose
modesty
was
such
that
he
would
not
derogate
the
invention
of
the
projection
from
me
,
to
himselfe
,
but
ingenuously
acknowledged
it
being
so
made
up
,
and
contrived
,
to
be
the
same
proiection
with
my
Ring
,
scrambling
peeces
various
phrases
laboured
,
planted
but
the
way
was
not
made
plaine
,
and
the
vaile
remooved
to
helpe
his
sight
:
God
insinuating
detractors
Logarythmes
Circular
Horizontall
Quadrant
Which
whilst
I
went
about
to
doe
,
another
to
whom
the
Author
in
a
loving
confidence
discovered
his
intent
,
went
about
to
preoccupate
,
and
prevent
,
if
not
Circumvent
.
preoccupating
,
preventing
discovering
in
loving
confidence
his
intention
to
me
,
Horizontall
Quadrant
the
Circles
of
projection
studeous
Reader
Doctrinall
Method
surcharge
the
memory
of
the
learner
,
his
intent
unto
me
in
a
loving
confidence
Issue
of
it
second
agent
prejudicate
affections
preoccupate
,
or
prevent
him
free
affections
too
high
conceat
communicated
to
others
be
knowne
in
his
name
iniure
the
dead
Gunters
Dyall
Horizontall
Quadrant
Pocket
Instrument
Mathematicall
practices
unvaile
the
subiect
and
to
make
way
for
another
to
helpe
his
sight
,
prevented
,
if
not
circumvented
fundamentall
dyagramme
of
Gunters
Booke
of
the
sector
Epistle
to
the
Reader
Geographer
Munster
English
Blagrave
Authors
letter
Tale
tellers
noble
spirits
Author
of
that
Projection
Epistle
to
the
Reader
Gunters
Booke
Ioyners
,
Carpenters
Schoole
Boyes
Gunters
Booke
Horizontall
Quadrant
Mathematicall
Ring
in
a
loving
manner
then
,
or
at
any
time
,
or
otherwise
that
he
discovered
his
intent
unto
me
,
to
open
the
way
unto
me
for
the
making
of
my
Ring
,
his
intent
in
a
loving
manner
(
as
before
)
he
opened
unto
me
,
Fishstreet
hill
Practicall
uses
Gunters
Ruler
(
to
an
eye
not
partiall
)
Lineary
forme
Instrumentall
Gemme
Logarythmes
Projected
Circular
Conclusion
of
my
Booke
Helicall
line
of
Roots
in
a
loving
confidence
the
Author
discovered
his
intent
unto
me
?
his
loving
intent
to
me
he
opened
,
and
so
was
circumvented
Gunters
Ruler
line
of
Numbers
numbers
Instrumentally
Meditations
fixed
Sphericall
Triangles
Astronomicall
Calculations
,
Nauticall
practices
Theoricall
contemplation
Practicall
operation
Goalden
Rule
combination
of
Numbers
common
affayres
fractionall
operation
continuall
proportion
Declination
of
the
Sunne
new
yeares
gift
new
yeares
day
new
yeares
day
Iudicious
Reader
Charitable
boone
Authors
loose
assertion
Courts
of
justice
vulgar
Teachers
glorifie
God
noble
profession
(
if
the
words
be
truly
scanned
)
That
it
is
a
preposterous
course
of
vulgar
Teachers
,
to
begin
to
teach
with
Instrument
,
which
was
not
onely
to
despight
Art
,
to
betray
willing
and
industrious
wits
to
ignorance
,
and
idlenesse
,
but
was
also
losse
of
precious
time
,
making
their
schollers
doers
of
tricks
,
as
it
were
Iuglers
.
noble
personages
doers
of
tricks
,
as
it
were
to
Iuggle
:
Practicall
Instrumentall
operation
Theoricall
figurative
demonstration
Mathematicall
knowledge
Mathematicall
operations
Mathematicall
Instrumen
Instrumentall
compendious
facilitie
Instrumentall
bate
Mechanicke
workemen
oppose
or
dispite
Art
Practicall
use
mans
knowledge
doctrinal
preceps
doctrinall
part
betray
willing
&
industrious
wits
to
ignorance
and
idlenesse
,
doctrinall
method
Theoricall
doctrine
Instrumentall
operation
Teachers
use
Method
as
false
in
the
assertion
dignitie
of
learning
Teachers
of
Mathematicks
Mathematicall
Instrument
should
be
losse
of
precious
time
,
Tables
of
the
learned
Subtenses
,
Sines
,
Tangents
Secants
serve
Radicall
extractions
labour
and
losse
of
time
Tables
of
Sines
,
Tangents
Logarythmall
Tables
Now
Instruments
Numbers
,
Sines
the
losse
of
pretious
time
Iuggle
,
nor
to
doe
tricks
,
neyther
to
oppose
or
dispite
Art
,
or
to
betray
willing
and
industrious
wits
to
ignorance
and
idlenesse
,
nor
losse
of
pretious
time
.
right
;
detraction
,
Calumnie
God
and
man
Calumniate
God
to
man
man
to
God
lancinates
,
teares
1
Cor.
6.
ancient
times
Qui
detractioni
student
diabolo
serviunt
Tale
bearer
Wolfe
of
envie
whole
body
The Sun not all doth claime , but Moone and Starres have shares , And greater lights neede not envie the lesser theirs : The Land not all doth keepe but gives the Sea its bounds , Hills have their tops , and let the valleyes have their rounds .
inanimat
bodies
holy
Church
reputation
of
others
Gods
Saints
St.
Paul
Hoc habeat concordia signum Vt quos una fides , jungat & vnus Amor.
Mathematicall
Ring
Circles
of
my
Ring
Projection
inlarged
Instrumentall
Invention
Practicall
use
Mathematicall
Ring
Arithmeticke
,
Geometrie
,
Astronomy
,
Horolographie
,
Navigation
.
&c.