8 



RECORD AND RESULTS OF 



Port Foulke, Observatory, Smith Strait. 

 Port Foulke, a short distance to the northward and eastward of Cape Alexander, 

 Smith Strait, was the winter quarters of the expedition during 1860-1861; the 

 astronomical and magnetic observatory is situated at the head of the bay. 



Observations for time. September 9th, 1860. 



Double altitudes of the sun with reflecting circle. 



T ■, f+32' 50" —30' 20"7 ^ ,- , 1/ iK„r 

 Index -j 'go eq qq iq r Correction +1' 17 '.5 



Pocket chronometer. 



4" 09" 



OP 



9 



55 



11 



01 



4 13 



21 



14 



14 



15 



04 



20 

 24° 23'|2J" 



24 



^>ni 



24 



'M?S 





2© 



25 



«HsS 



25 



«»|?S 



24 



^"{11 



Pocket chronometer. 

 4" 11'^ 15^ 



18 01 



19 04 



4 21 10 



22 06 



23 14 



20 ^^ 



240 45/ f ^0' 



24-^3^ 



136 

 20 



23 22 

 23 18 

 23 13 



20 

 20 

 10 

 30 



(50 

 140 

 (40 

 130 

 f.30 

 120 



'= +26°.0, B = 29'° 80 at 62° Index j+gg'^" "gJ'^Q"} Correction +1' 05" 



Assumed latitude 78° IT' 39", assumed longitude 4^865 west of Greenwich. 

 Keducing these observations by the formula 



sin It — '/**'' I [? + (^ — ^)] ^^^ I [? — (^ — ^)1) 



J(- 



we have for each set : r =■ 



cos ^ COS S ' 



4' 32". 7 5-1= — 4'40".0 7ti = + 8".3 



T 

 4" 12" 06'. 

 4 20 09.3 



77° 44' 12" I +5° 00' 52" I +51° 08' 18" 



78 04 02 I +5 00 45 | +53 09 04 



Converting into mean time and comparing with the chronometer time, we find 

 the chronometer corrections : — 



— 50" 35". and from second set 

 —50 35.2 



Ar=— 50 35.1 



Observations for time, September 9th (10th A. M.). Strong wind, affecting the artificial horizon 



Double altitudes of the sun, with reflecting circle. 



T . (+32' 40" —31' 00") ^ ,. ,1, .,, 



Index -^^33 ^^ _^^ 3^ | Correction +1 5" 



2G 



QfiO r.^1 J 30 



3ket chronometer. 



10" 8" 



42^ 



9 



25 



10 



07 



10 11 



02 



11 



43 



12 



20 



26 



^»|S 



27 



«^s 





20 



28 



09 \^^ 



^^ loo 



28 



12 l^*^ 



^" loo 



28 



14 {^^ 

 ^* I20 



iet chronometer. 





2© 



10" 14" 



29' 



28° 



22' |20 



loo 



15 



02 



28 



-IS 



15 



42 



28 



» IS 



20 



10 16 



50 



27 



9Q f40 



^^ ^^20 



17 



28 



27 



»{« 



18 



33 



27 



"{SS 



