...and remarked, thac there appeared fome inconfiftency in the French philefopher's method for obtaining the length of a degree of a great circle perpendicular to the meridian. Dr. Mafkelyne pointed out the lource of the error, and obligingly communicated it to General Roy, who...

...great triangles. Section V. — Of the directions of the meridians at Dunnofe arcd Ik-achy Head ; and the length of a degree of a great circle, perpendicular to the meridian, in latitude 50° 41'. Section VI. — Of the difbnces of the dations from the meridians of Greenwich,...

...great triangles. Section V. — Of the diredtions of the meridians at Dunnofc and Beachy Head ; and the length of a degree of a great circle, perpendicular to the meridian, in latitude 50° 41 . Section VI. — Of the diftances of the Ibtions from the meridians of Greenwich,...

...affords strong reason for supposing, that the operations at Beachy Head and Dunnose, in 1794, for finding the length of a degree of a great circle perpendicular to the meridian on the earth's surface, were made with the required accuracy. SECTION THIRD. Trigonometrical Surveys...

...the meridian had been determined at Dunnose and Beachy Head as early as 1794, and calculation made of the length of a degree of a great circle perpendicular to the meridian in latitude 50° 41'; great interest being taken at the time in the question, Whether the length of...

...at Dunnose and at Beachey ; but it is unnecessary to enter on this occasion into the calculations of the length of a degree of a great circle perpendicular to the meridian, in the latitude of 50° 41', which were founded on these observations. The operations of these years...

...triangles. The fifth fe&ion is ' on the dive£tio.n of the meridians at Dunnbfe and Beachy Head ; and the length of a degree of .a great circle, perpendicular to the meridian, in latitude 50° 4!. * The, lixth fection treats « of the diftances of the ftations from the meri»...