scHMECKEBiEK.] PUBLICATIONS OF HA\DEN SURVEY. 35 



MAPS. 



ATLAS OF COLORADO. 



[first edition.] 



[Vig-nctte] Department of the Interior. United States (xeological 

 and Geoo-rapliieal Surveys of the Territories. Geolog-ical and Geo- 

 g-raphical Atlas of Colorado and portions of adjacent territory by 

 F. V. Hayden U. S. Geologist in charge. 1877 Julius Bien, Lith. 



Folio, 2 11. (title page and legend), 20 double folio atlas sheets. 



Sheets I-IV are triangulation, drainage, land classification, and geologic maps of 

 Colorado west of longitude 102°, on the scale of 12 miles to the inch. 



Sheets V-XVI are topographic (contour) and geologic maps of Colorado and adja- 

 cent States, between meridians 104° 30^ and 109° 30^ and parallels 36° 45^ and 40° W, 

 on the scale of 4 miles to the inch. 



Sheets XVII and XVIII contain three geologic sections across the State, west of 

 the longitude 104° 30^ 



Sheets XIX and XX are panoramic views of the Pikes Peak group, Sa watch Range, 

 central portion of West Elk Mountains, Twin Lakes, southwestern border of the 

 Mesa Verde, San Juan Mountains, and La Plata Mountains. 



[second edition.] 



[Vignette] Department of the Interior. United States Geological 

 and Geographical Surveys of the Territories. Geographical and Geo- 

 logical atlas of Colorado and portions of adjacent territory by F. V. 

 Hayden U. S. Geologist in charge Corrected to date and printed in 

 accordance with an act of Congress approved February 9th, 1881. 

 Julius Bien, Lith. 



Folio, 2 11. (title page and legend), 20 double folio atlas sheets. Contents same as 

 first edition. 



SEPARATE MAPS.'* 



]\Iap showing primary triangulation of 1877. 



General geologic map of area explored from 1869 to 1880. Limit- 

 ing meridians, 90*^ and 111"; limiting parallels, 35^ and 48°. Scale, 

 11.03 miles to the inch. 



COLORADO. 



Land survc}' work in Colorado. Scale, 1 miles to the inch. Pub- 

 lished for field use of Surve}^ only. 



Central Colorado, showing regions surveyed in 1873. Shows drain- 

 age only. Scale, 8 miles to the inch. Also in report for 1873. 



a Tn the list below are given the maps issued independent of other publications. Maps accompany- 

 ing the reports are listed in the "Index," pages 131-139. 



