320 APPENDIX A 



Micrometer traverse and graphic triangulation, with contours, field scale 

 1 : 90,000. 



Total time required, days' 40.5 



Average distance per days in miles 7.5 



Average number of plane-table stations occupied per day 1.5 



Average area per day in square miles 38. 



Located points per square mile 0.25 



Approximate elevations in excess of above, per square mile 0.25 



Highest station occupied, feet above sea level 17,675. 



Highest point located, feet above sea level 21,703. 



