[237] 118 



XI. HUPPAN-KUTEY PRAIRIE — AMERICAN FUR COMPANY'S HOUSE. 



h. m. S. 



1. Longitude, mean of 8 sets, or 76 lunar distances E. 



and W. J) 6 26 56.72 



2. Chronometric longitude, inferred from station near 



Engineer Cantonment - - - - 6 26 38.00 



Mean - - - - 6 26 47.36 



Lonsitude in arc - - - 96° 41' 50".4 



XII. WINI-WAKAN LAKE, OR DEVIL's LAKE SECOND OR MIDDLE STATION 



ON SOUTH SHORE, MARKED ON THE MAP. 



h. m. S. 



1. Longitude, mean of 8 sets, or 87 distances from the 



sun to the moon - - - - - 6 33 58. IS 



2. Chronometric longitude, deduced from the occulta- 



tion at the Coteau du Missouri - - - 6 33 45.26 



Mean - - - - 6 33 51.72 



Longitude in arc - - - 98° 27' 55".8 



XIII AND XIV. ENGINEER CANTONMENT, AND ASTRONOMICAL STATION 

 BETWEEN ENGINEER CANTONMENT AND COUNCIL BLUFFS. 



In the account of an expedition from Pittsburg to the Rocky Mountains, 

 under the command of Major Stephen H. Long, United States topojrraphi- 

 cal engineers, we find a table of latitude and longitude observed at different 

 points of the country explored by the expedition. One of the geographical 

 positions thus given is particularly interesting to me, because it comes with- 

 in the field of my labors, and because it was carefully determined during 

 the period spent at it — I mean Engineer Cantonment, a few miles below 

 Council Blufls. 



According to the statement given in the second Volume of the work re- 

 ferred to by my friend, J. D. Graham, at the time lieutenant United States 

 artillery, and now major United States topog:raphical engineers, the resulting 

 longitude deduced from the astronomical observations made in the winter 

 of 1819-'20, is— 



Moan of 5 sets of lunar distances, and 3 emersions of Jupiter's satellites, 

 95° 43' 53". 



The other astronomical station mentioned in the caption afforded me 

 the opportunity of verifying both its longitude and the daily rate of my 

 chronometer. 



I could not land immediately at Engineer Cantonment, owing to the 

 washing away on the eastern bank of the Missouri river, which has for 

 som(! years lelt inland lo the western side the former station. But, for- 

 tunatftly for me, many sand-bars compelled our steamboat to lie by for a 

 day and two nights. We encamped, ilierefore, on an island which occurs 



