APPENDIX B. — TABLE OF GEOGRAPHICAL POSITIONS. 301 



Geographical Positions — Continued, 



1850. 



Localities. 



Latitude. 



Longitude 



west of 

 Greenwich. 



No. 



<< 



37 



38 



39 

 40 

 41 

 42 



43 

 44 

 45 

 46 



47 

 48 

 49 

 60 



Crow Creek, one and a half miles below 

 the kanyon. 



Branch of Lodge Pole Creek, in Che- 

 yenne Pass. 



Branch of Chug-water River 



41° 



41° 



•41° 

 41° 

 42° 

 41° 



41° 

 41° 

 41° 

 41° 

 40° 

 40° 

 40° 

 39° 



09' 03" 



21' 45" 



45' 35" 

 39' 58" 

 12' 38" 

 55' 36" 



48' 25" 

 45' 39" 

 33' 22" 

 17' 18" 

 38' 45" 

 13' 41" 

 11' 16" 

 21' 14" 



.5 



.7 



.8 

 .4 



.2 

 .7 



.7 



.7 

 2 



105° 08' 24" 



105° 12' 21" 



104° 59' 25" 

 104° 56' 45" 

 104° 31' 26" 

 103° 58' 23" 



103° 45' 02" 



103° 21' 44" 



102° 45' 10" 



102° 02' 28" 



98° 58' 11" 



97° 54' 36" 



97° 39' 02" 



94° 44' 00" 



Chug-water River; Bridger's ravine.... 

 Fort Laramie • 



North Platte River ; left bank, below 

 mouth of Horse Creek. 



Scott's BluflFs 



Left bank of Platte River 



Left bank of Platte River 



Ash Hollow; one mile from river.. 



Fort Kearny 



Oak Grove; Little Blue River 







Road at leaving Little Blue River,. 

 Fort Leavenworth, according to 



determinations of Major Emory 



M. Nicollet. 





the 

 and 



REMARKS. 



The longitudes given in the table depend upon those assumed 

 for Fort Leavenworth, and a point in Great Salt Lake Valley, 

 taken from Nicollet and Fremont. Their means for fixing these 

 points were so superior to ours that they are necessarily adopted ; 

 our sextants being imperfect, and the mode of transporting chrono- 

 meters, of the kind furnished, interfering with their regularity. 

 On leaving Fort Leavenworth, the two chronometers difiered but 

 8.5 seconds ; they were put into leather boxes, carefully adjusted 

 upon two mounted men, and at the end of the first six miles differed 

 11 minutes and 11 seconds. From subsequent observations the 

 loss was attributed to No. 1961. They were then carried in a 

 spring-wagon with the other instruments. The average daily differ- 

 ence for the entire route was a little above one second. The re- 

 lative rate was, for sixteen days, a losing one of half a second ; 

 then, to Laramie, one and a half second's gain. Thence they were 

 carried in another light wagon, and the rate was about one second. 

 Whatever important changes one received, was therefore partaken 

 by the other. 



