Geodesy : the eastern oblique arc of the United States and osculating spheroid / by ChasASchott . Line 173 Ethridge 143 470 Fatama 165 540 Midway 171 562 Creagh 33 435 Pollard 121 397 The observations of theprimary directions were madeat night upon lights mountedover the respective stations. At Pollard .station it to mount the theodolite on a wooden .structure 199 No. 31. K/amieoTX,, y^,. FoTLcurd. Kilometers I H M MH-H- 10 20 30 40 Statute Miles 50 60 hH ^-1 v-i 1-1 1-^ 10 10 20 30 40 200 THE EASTERN OBLIQUE ARC. 4653 meters (or 152 J^ feet) above the
Geodesy : the eastern oblique arc of the United States and osculating spheroid / by ChasASchott . Line 173 Ethridge 143 470 Fatama 165 540 Midway 171 562 Creagh 33 435 Pollard 121 397 The observations of theprimary directions were madeat night upon lights mountedover the respective stations. At Pollard .station it to mount the theodolite on a wooden .structure 199 No. 31. K/amieoTX,, y^,. FoTLcurd. Kilometers I H M MH-H- 10 20 30 40 Statute Miles 50 60 hH ^-1 v-i 1-1 1-^ 10 10 20 30 40 200 THE EASTERN OBLIQUE ARC. 4653 meters (or 152 J^ feet) above the ground, in order to raise it above the high woodsobstructing the hues of sight. Squaring the closing errors of the triangles we get the mean error V 28 -^ •08 I-08 and the mean error of an angle—y^ =±o63, also the probable error of a direction,d=o-30. Abslracls of horizontal directions at stations composing the fourth section of the triangulation ivest of the Atlanta base net, Alabama. /SSS-/Sgj. Jamison, Chilton County, Alabama. February I and March 5, 1889, and May 7 to 14, 1S90. 30*^™repeating theodolite No. 16. F. W. Perkins and W. B. Fairfield, observers. Telescope 2i abovethe ground. Number ofdirections. LaurelWeogufka objects obser\ed 3 Wilder 4 Perry CorrectionsResults from adjust- from adjust-ment of third section. ment of fourth section. Finalseconds. O GO 59 81 73 oS 57 -69 151 38 56-43 231 ID 2986 Mean
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashi, bookyear1902
