36 PUBLICATIONS OF HAYDEJST SURVEY. [bull. 222. 



Maj) showing primary and secondary triangulation of 1873. Lim- 

 iting meridians, 104° 15' and 107'^; limiting parallels, 38° and 40° 30'. 

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



Preliminary map of the San Juan country. Shows drainage only. 

 Limiting meridians, 100° lo' and 108'^'; limiting parallels, 37° 15' and 

 38° liV. Scale, 4 miles to the inch. Also in Bull., vol. i, Ko. 3, 2d 

 series. 



Preliminary map of central Colorado, showing region surveyed in 

 1873 and 1874. Limiting meridians, 104° 30' and 1U7° 30'; limiting 

 parallels, 37° and 40° 30'. Also in report for 1874. 



Drainage map of Colorado. Portion of State west of one hundred 

 and second meridian. Scale, V2 miles to the inch. Also in Atlas of 

 Colorado. 



Economic map of Colorado, showing areas of arable, pasture, timber, 

 desert, coal, and other lands. Portion of State west of one hundred 

 and second meridian. Scale, 12 miles to the inch. Published also in 

 Atlas of Colorado. 



General geologic map of Colorado. Portion west of one hundred and 

 second meridian. Scale, 12 miles to the inch. Also in Atlas of 

 Colorado. 



Parts of Idaho, Montana, and Wyoming. Limiting meridians, 109- 

 and 114°; limiting parallels, 43° and 46°. Hachure. Scale, lO miles 

 to the inch. 



Sources of Snake River and portions of headwaters of Madison 

 and Yellowstone rivers. Topography shown by brush work. Scale, 

 5 miles to the inch. 



Geologic map on above base. 



Drainage map of portions of "Wji-oming, Idaho, and Utah. Limiting 

 meridians, 107° and 112° 30'; limiting parallels, 42° 45' and 44°. 

 Scale, 8 miles to the inch. 



MONTANA. 



Parts of Idaho, Montana, and Wyoming. Limiting meridians, 109° 

 and 114°; limiting parallels, 43° and 46°. Hachure. Scale, 10 miles 

 to the inch. 



Montana and Wyoming Territories, embracing most of the country 

 drained hiy Madison, Gallatin, and Upper Yellowstone rivers. Contour 

 interval, 100 feet. Scale, 4 miles to the inch. 



Geologic map on same base. 



Drainage map of portions of Wyoming, Idaho, and Utah. Limit- 

 ing meridians, 107° and 112° 30'; limiting parallels, 42^^' 45' and 44°. 

 Scale, 8 miles to the inch. 



