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back to object record
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MAP FEATURES
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title cartouche
dedication
map maker
publisher
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Printed in a plain rectangular cartouche upper left
is:-
The Passage of the ANNULAR PENUMBRA over SCOTLAND &c. In the
Central Eclipse of the Sun on the 18th. day of February
1736/7 in the Afternoon.
Humbly Inscrib'd to the President, Council and Fellows of
the ROYAL SOCIETY By Thomas Wright of the City of Durham.
NB Mr. Wright has lately publishd by Subscription the
Perpetual Pannauticon or Universal Mariners Magazine being a
Mathematical Instrument 18 inches Diamr. describing the
Lunar Theory and motion of the Tides. To be had of the
Author at Mr. senex's.
Printed at the bottom:-
Sold by John Senex at the Globe over against St. Dunstans
Church in Fleetstreet: who has lately finished and sells a
Pair of Globes of 28 Inches Diameter with all the late
Observations and Discoveries describ'd; The like nowhere
else made. Also those of 17, 12 & 9 Inches Diameter, all
with Bayers letters of refference incerted on the Celestial,
and the Rhumb lines beautifully delineated on the
Terrestryal: And if required the Celestial 17 made so, as to
adjust the Intersection of the Equinoctial and Ecliptic, to
any time past or to come; a thing never before perform'd. By
John Senex F.R.S.
Printed lower left:-
Just Publishd a large Map 7 foot long & 5 foot deep of the
Kingdoms of England, Scotland & Ireland, and so much of
Germany as includes the Electorate of Hanover, Dutches of
Zel, Bremen, Verden, &c. All in the same Scale. In which may
be seen the magnitude of the German Dominions, compard with
either of those Kingdoms, as also their bearing & distance
from Great Britain. price 20 shils. on cloth with roles.
Also beware, printed right centre:-
NB It must not be expected that a Construction of this kind
can come so near as that of a Calculation; when in the last
Eclipse of the Moon, it was Observed to begin even within a
minute as Mr. Wright had Calculated it.
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orientation
compass rose
up is N
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Printed on the right is a compass rose aligned with the
graticule; star points for the cardinal directions, lines
for the half cardinal, North marked by a fleur de lys, East
by a cross. The map is printed with North at the top of the
sheet.
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scale line
scale
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Printed on the right, along the 54d N parallel, is a
scale line of
Miles
chequered at 5 mile intervals, labelled in blocks of 20
miles. The 85 miles = 52.8 mm giving a scale 1 to 2590800;
the map scale is about:-
1 to 2600000
41 miles to 1 inch
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lat and long
lat and long scales
lat and long grid
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The map borders have scales of latitude and longitude for
a trapezoid projection; chequered at 10 minute intervals,
labelled at 1 degree intervals. A graticule is printed over
the map at 1 degree intervals. The prime meridian passes
through the centre of London. The bottom scale is
labelled:-
West Longitude from London
The map includes from about 3d E to 12d W, from 50d to
59d N; the whole of the British Isles excepting Orkney and
Shetland, and a corner of the coast of France. Should the
figures be needed the scales were measured:-
at 51d N 14d longitude = 432.0 mm
at 58d N 15d longitude = 359.2 mm
7d latitude = 297.0 mm
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eclipse
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The path of the eclipse is shown by plotting its central
line from approximately 11d 0m W, 53d 15m N to 2d 0m E, 57d
8m N; passing through Killala - labelled Killalore, County
Mayo, Ireland and Edinburgh, Scotland. There are no times
long the track. A shaded band about 80 miles wide shows the
path of totality. Centred over Edinburgh is a darker shaded
ellipse showing the shape of the moon's shadow:-
The Oblique Section of the Annular PENUMBRA
54 places on the map have a diagram indicating the degree
of eclipse; a dark moon circle over a circle for the sun;
the moon's circle is drawn 12.3mm diameter, the sun's
14.4mm. At Edinburgh the two circles are [about] concentric,
the sun's corona peeping around the moon. Elsewhere the
circles are drawn to show the maximum eclipse for the place;
within the shaded band the eclipses are offcentred but
total; outside the band they are partial.
Carlisle has a total eclipse, with moon a little
offcentre.
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