| Ralph Griffiths, G. E. Griffiths - 1788 - 714 pages
...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... | |
| 1796 - 746 pages
...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,... | |
| 1796 - 816 pages
...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,... | |
| William Mudge - 1801 - 398 pages
...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... | |
| John Ferguson McLennan - 1867 - 502 pages
...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... | |
| Joseph Ellison Portlock - 1869 - 348 pages
...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... | |
| Tobias Smollett - 1796 - 612 pages
...triangles. The fifth fe&ion is ' on the diveŁtio.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»... | |
| |