APPENDIX V GEOGRAPHIC POSITIONS AND DESCRIPTIONS OF TRIANGULATION AND TRAVERSE STATIONS This appendix contains: The tables of geographic positions of the triangulation and traverse stations used in determining the latitudes and longitudes of the boundary monuments and marks and in controlling the topographic surveys; the descriptions of all the marked triangulation and traverse stations other than boundary monuments; sketches of the triangulation and traverse schemes; and a station index to the tables, descriptions, and sketches. EXPLANATION OF TABLES All latitudes and longitudes are given in terms of the North American geodetic datum of 1927.1 All azimuths are reckoned clockwise from the south. All distances are given in meters and are reduced to their mean-sea-level values. Note should be made of the fact that the logarithms of distances have been derived from the computations and the distances have been derived from their corresponding logarithms. The azimuth and length of any line will be found opposite the second of the two stations of that line in the order in which they are listed. The following abbreviations have been used: "Mon." for Monument, "Ref." for Reference, and "ecc." for eccentric station. In the tables of first-order triangulation stations the latitudes and longitudes are given to thousandths of seconds, the azimuths to hundredths of seconds, and the logarithms of distances to seven decimal places. The same is true for firstorder traverse stations except that the azimuths are given to tenths of seconds only. In the tables of major triangulation stations the latitudes and longitudes are given to thousandths of seconds, the azimuths to tenths of seconds, and the logarithms of distances to six decimal places. In the tables of minor triangulation stations the latitudes and longitudes are given to hundredths of seconds, the azimuths to even seconds, and the logarithms of distances to six decimal places. In selecting stations upon which new triangulation is to be based, points of the first-order or of the major schemes of triangulation should be chosen in preference to those of a lower order. In searching for a particular triangulation station on the ground, reference should be made to the boundary maps and triangulation sketches as well as to the printed description of the station. The use of the station index and the triangulation sketches will materially facilitate obtaining any specific geodetic data desired. 1 See p. 144. 2 Formula for reduction, p. 143. 253 |