. Report of the Boundary commission upon the survey and re-marking of the boundary between the United States and Mexico west of the Rio Grande, 1891-1896 ... distances withmetric tape, when the polygons were small, or with odometers upon handwheels, when they werelarge. By the same method the main estuaries were surveyed and other polygons were run in thevalley of the river so as to take in the detail of the Mexican side and make sure that no detailwas hidden by the vegetation. The final results of the triangulation were computed with the ditterences of geographicalcoordinates, between Monumen
. Report of the Boundary commission upon the survey and re-marking of the boundary between the United States and Mexico west of the Rio Grande, 1891-1896 ... distances withmetric tape, when the polygons were small, or with odometers upon handwheels, when they werelarge. By the same method the main estuaries were surveyed and other polygons were run in thevalley of the river so as to take in the detail of the Mexican side and make sure that no detailwas hidden by the vegetation. The final results of the triangulation were computed with the ditterences of geographicalcoordinates, between Monuments 205 and 207, and were compared with those obtained for thesame points by the geodetical work of the commission. The following differences were found; l);!<.f latitude by Mexican tiiannulatioii in lSil4 13 DiticieMci! of latitude by survey tiiausulafion iu 18915 13 I),.an<y 0 Diftereuce of longitude by Moxicau tiiangulation in 1894 i Difference of longitude by boundary survey triangulation iu 1893 i 43. 3 DiHerepauey 1-*^ The projection of the map was adjusted to the positions of the boundary UNITED STATES AND MEXICAN BOUNDARY. 51 SECTION 12. As provided at the meeting of tbe joint commission held in San Diego June 19,1894, the twoGovernments were informed of the necessity for an extension in the time of the last convention toenable tbe commission to fully complete its labors, including the preparation of the final maps andreports. In compliance with this request a convention between the United States and Mexicowas signed at Washington on August 24, 1894, and duly ratified by the respective Governments. Following is a copy of this convention : Whereas the Unitfd States ot America aud the Lniti-d States of ilcxicu desire to comply fully with the ino-visions of the couventioii concluded and signed at Washington July 29,1882, ])roviding for an international boundarysurvey to relocate the existing frontier line between th
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