THE PRIMARY STATIONS AT CHEYENNE, WYOMING TERRITORY, AND MADE DURING The Years 1872 and 1873, GEOGRAPHICAL AND GEOLOGICAL EXPLORATIONS AND SURVEYS WEST OF THE Signals for determination of longitude between Salt Lake City and Colorado Springs Mean places of stars for 1873 used for determination of latitude Observations for latitude Computations for latitude Discussion of probable error Astronomical co-ordinates Instructions for conducting observations, field-season of 1873 |