ASTRONOMICAL AND GEODETIC OBSERVATIONS. 



25 



Littleton Island, Smith Strait. 



Observations for time aod longitude, July 21 (22d'A. M.), 1861. 



Double altitudes of the sun. H. G. Radcliff, observer. 



Chronometer 2007 



gh 34m 



03' 



34 



49 



36 



IT 



3 39 



00 



39 



5t 



41 



14 



3" 35" 03=.0 

 3 40 03.T 



20 



62° 42' 40" 



43 10 



44 10 



20 



61 50 00 



51 40 



54 10 



58° 55' 04" 

 58 49 14 



20° 13' 24' 

 20 13 22 



T = + 340 



B = 29'". 6 at 72° 



Inde.x correction + 1' 04' 



Semidiamcter 15' 47' 



/• = 1'37" t\=l' 39' 



rt = 8" 



—19° 59' 39' 

 —18 39 26 



Mean 



E 

 + er 07'. 6 

 + 6 07.6 



—4*- 48°" 54M 

 —4 48 33.8 



—4 48 44 



Observations for time and longitude, July 26th, 1861. 

 Chronometer 2007.^ Corrected alt. Q 



7" 51° 10' 



58 



19 



58 



12 



02 



21 



04 



53 



06 



49 



270 33' 50" 



27 28 55 



27 18 



27- 08 



01 

 31 



27 02 43 



26 57 43 



T f J 



59'" 27'. 3 I 62° 45' 03" | 19° 20' 06" 



T = + 440 



B = 29^88 at 55° 



450 16' 20" 



E 

 + 6" 11'. 5 



aT 



—4" 49" 03". 2 



1861, July 21 

 1861, July 26 



Longitude of Littleton Island. 



A T Litt. Island. 

 . I _4i' 48" 44' 

 . —4 49 03 



A T Port Foulke. Litt. Is. west. 

 —4" 47° 02' I 1° 42' 

 —4 46 57 2 06 



Mean 



1 54 



If we reject the second set of observations on the 21st, the two results for differ- 

 ence of longitude become 1" 52' and 2" 06% the mean 1" 59' is adopted. The 

 longitude of Littleton Island becomes therefore 4'' 53" 59', Avhich agrees well with 

 the geodetic determination, for Avhich see chart of Port Foulke and vicinity. 



This chart puts Cape Alexander in latitude 78° 10'. 5. Dr. Kane found, June 17, 

 1855, the latitude 78° 09'. 3, a result which agrees well enough with the chart. 



' The chronometer minutes have been changed from 35° to 34°. 



" The above times are the observed times — 3° 07^3, by which correction the observer intended 

 them to represent Greenwich time. 



4 May, 1865. 



