Stations. Astronomical Distance of
Latitudes. Parallels.
deg. ' " Ft.
Formentera 38 39 53.17 ..
Mountjouy 41 21 44.96 982671.04
Barcelona 41 22 47.90 988701.92
Carcassonne 43 12 54.30 1657287.93
Pantheon 48 50 47.98 3710827.13
Dunkirk 51 2 8.41 4509790.84
The distance of the parallels of Dunkirk and Greenwich, deduced from the
extension of the triangulation of England into France, in 1862, is
161407.3 ft., which is 3.9 ft. greater than that obtained from Captain
Kater's triangulation, and 3.2 ft. less than the distance calculated by
Delambre from General Roy's triangulation. The following table shows the
data of the English arc with the distances in standard feet from
Formentera.
deg. ' " Ft.
Formentera .. ..
Greenwich 51 28 38.30 4671198.3
Arbury 52 13 26.59 4943837.6
Clifton 53 27 29.50 5394063.4
Kellie Law 56 14 53.60 6413221.7
Stirling 57 27 49.12 6857323.3
Saxavord 60 49 37.21 8086820.7
The latitude assigned in this table to Saxavord is not the directly
observed latitude, which is 60 deg. 49' 38.58", for there are here a
cluster of three points, whose latitudes are astronomically determined;
and if we transfer, by means of the geodesic connexion, the latitude of
Gerth of Scaw to Saxavord, we get 60 deg. 49' 36.59"; and if we similarly
transfer the latitude of Balta, we get 60 deg. 49' 36.46". The mean of
these three is that entered in the above table.