712 BULLETIN UNITED STATES GEOLOGICAL SUEVEY. 



the same time, sufficiently accurate for the class of work to which it is 

 applied. 



The primary object of ^his triangulatiou is to locate points at short 

 intervals, upon which the topographical work could be based, and that 

 these points should be located with such a degree of accuracy that the 

 errors would not be appreciable within the limits of the territory on our 

 maps, the scale being four miles to one inch, and I believe that this has 

 been fully accomplished. 



The accompanying map shows a general plot of the triangulation; 

 all of the occupied stations are given, and a few of the located points. 

 1 did not consider it necessary to give the numerous points that have 

 been located by foresight intersections, as it would only serve to make 

 the plot more confusing. 



The latitudes and longitudes are based on the stations located for us 

 by the kind co-operation of the United States, Coast Survey at Denver, 

 Colorado Springs, and Trinidad, and have been computed from these 

 points. 



Azimuths have been taken at intervals over the whole system. 



Below will be found a list of the primary points, with their latitudes, 

 longitudes, and elevations; also, a table of azimuths and distances from 

 each station to the surrounding points. The azimuths are given from 

 the south line as zero around to the right; the distances in miles and 

 decimals thereof. 



