Geodetic work in Mexico from May, 1950, to April, 1951

During the year 1950, measurement of the arc along the 101st meridian between latitudes 20° and 30°N was completed. The following geodetic stations were established on this arc during this period: Frailes, Reposa, Salto Colorado, Cerro Grande, Ojito de las Vacas, San Nicolas, Cerritos, Mesa Redonda, Camisa, and Nieves. The Wild T-3 theodolite was used for observations with 16 circle settings in both positions of the telescope.