Latitude of
middle point. Fathoms.
° ′ ″
Arbury Hill and Clifton 52 50 29·8 60,766
Blenheim and Clifton 52 38 56·1 60,769
Greenwich and Clifton 52 28 5·7 60,794
Dunnose and Clifton 52 2 19·8 60,820
Arbury Hill and Greenwich 51 51 4·1 60,849
Dunnose and Arbury Hill 51 35 18·2 60,864
Blenheim and Dunnose 51 13 18·2 60,890
Dunnose and Greenwich 51 2 54·2 60,884
This table presents a singular deviation from the common rule; for
instead of the degrees _increasing_ as we proceed from north to south,
they appear to _decrease_, as if the Earth were an _oblong_ instead
of an _oblate_ spheroid. * * The measurements of small arcs of the
meridian in other countries have presented similar instances.”[4]
[4] Encyclopedia of Geography, by Hugh Murray and several Professors
in the University of Edinburgh.
A number of French Academicians who measured above three degrees of
the meridian in Peru, gave as the result of their labours the first
degree of the meridian from the equator as 56,653 toises; whilst
another company of Academicians, who proceeded to Bothnia in Lapland,
gave as the result of their calculation 57,422 toises for the length
of a degree cutting the polar circle. But a more recent measurement
made by the Swedish Astronomers in Bothnia shows the French to have
been incorrect, having given the degree there 196 toises more than
the true length. Other observations have been made, but as no two sets
of experiments agree in result, it would be very unsatisfactory to
conclude from them that the Earth is an oblate spheroid.
Public-domain text, read in full here on John Shaqi.
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