544 BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



by a topographical party working from an independent base line. 

 Each topographical party was accompanied by one or more field 

 assistants, whose duty it was: First, to gauge the streams and take 

 notes with reference to irrigable areas and measure cross sections 

 of such areas ; second, to collect samples of the soils and grasses and 

 specimens of the trees. 



The following year a geological party equipped with rapid-process 

 copies of the topographical map, made a special exploration of the 

 area for coal-bearing districts. The coal beds were explored by 

 pits, trenches, or tunnels under cover ; differential samples were taken 

 and these were sent to the home office and analyzed. In order to 

 locate on the existing or prospective map the position of field oh- 

 servations the observers were provided with a light, specially con- 

 structed dioptic compass which revolved on a graduated circle and 

 could be read more closely than by the needle. Bearings taken to 

 several prominent points served to approximately fix the position of 

 the observation to be recorded. 



No museum was established. 



The total expenditure for the survey during the three years (two 

 years of field work) of its existence was $398,940. Of this amount 

 more than a third was spent in the special exploration of the coal 

 fields, in digging and boring. The publications were map bulletins. 



Topographical department : Bulletin No. 1, A. D. Wilson, in charge. Map 

 of the Yakima Region, Washington Territory; 2 sheets; A. D. Wilson and 

 R, U. Good.e. Map of the Colville region, Washington Territory; 1 sheet; 

 Louis Nell. Map of the Judith Basin, Montana Territory; 2 sheets; A. D. Wil- 

 son. Map of the Crazy Mountains, Montana Territory; 1 sheet; A. D. Wilson. 



Agricultural department: Bulletin No. 1, E. W, Hilgard, in charge. Prelimi- 

 nary agricultural map of the Yakima region; 2 sheets. Preliminary agricul- 

 tural map of the Colville region ; 1 sheet. 



Forestry department: Bulletin No. 1, C. S. Sargent, in charge. Forest map 

 of the Yakima region. The Cretaceous bituminous coals of Montana and Wash- 

 ington Territories. Topographical map of central Montana; 5 sheets. Geo- 

 logical map of central Montana ; 5 sheets. 



The editions were limited to 600 copies and were distributed 

 chiefly to libraries and societies. 



The greater part of the results remains unpublished. 



