90 



RECORD AND. RESULTS OP 



diurnal variation and the disturbances in these high latitudes comprise so large a 

 range as to require many and contimied observations of the magnet. The result 

 of the following observations, taken by Mr. Sonntag, at Proven, accords well enough 

 with the supposed distribution of magnetism as marked upon the Admiralty Chart 

 of Baffin Bay of 1859 (No. 2177). 



Proven, North Greenland. August 8 (P. M.) 1860. 

 Instrument used : the theodolite. Observer, A. Sonntag. 

 Bearins;s of the sun. 



Limb. 



Pocket chroDometer. 



Circle. 



Magnetic meridian. 



01 



^h 20"" 21= 



29° 



29' 



30' 



332° 02' 



10 



1 21 24 



29 



49 



50 



03 



10 



1 22 10 



29 



36 



31 



03 



Ol 



1 22 50 



28 



50 



50 



02 



10 



1 26 51 



28 



30 



31 





01 



1 2t 46 



2t 



40 



41 



152 36.6 



Ql 



1 28 35 



27 



26 



21 



35.6 



lO 



1 29 40 



21 



45 



46 





We have from the astronomical paper the correction of the pocket chronometer, 

 August 8, 1860, AT= + 1'' 01" 38^ ; the latitude ^ = 72° 23' 01", and the longi- 

 tude a = 3'^ 42-" IIM. We find the hour angles 2'^ 18" OP and 2" 24" 33' for the 

 two sets, and the corresponding azimuths of the sim 39° 01'. 5 and 40° 48'. 0. 

 Magnetic meridian 152° 19'.3 152° 19'.3 



29 26.3 



27 50.8 



Circle reading . 



Difference 

 Azimuth of sun 



Magnetic declination W 83 51.5 83 40.5 



Mean declination + 83° 46' or + 83° 24' when corrected for diurnal variation. 



122 

 39 



53.0 

 01.5 



124 

 40 



28.5 

 48.0 



Recapitulation 



OF OBSERVED DECLINATIONS. 





West (magnetic) declination is indicated by a + sign. 





No. 



Locality. 



Latitude. 



Longitude. 



Declination. 



Date. 



Observer. 



1 



Proven, North Greenland, 



72° 



23' 



■55° 



33' 



+ 83° 24' 



Aug. 1860 



A. Sonntag 



2 



Starr Island, Smith Strait, 



78 



18 



73 



06 



+ 109 45 



Oct. " 



" 



3 



Cairn Point, " 



78 



31 



72 



59 



+ 110 09 



Apr. 1861 



I. I. Hayes and ") 

 S. J. M'Cormick j 



















4 



Foggy Camp, Smith Sound 



79 



55 



71 



28 



+ 106 53 



May, " 



I. I. Hayes 



5 



Camp Hawks, " 



79 



44 



73 



06 



+ 115 38 



" " 





6 



Cache on Floe, " 



79 



30 



72 



53 



+ 113 52 



" " 





1 



Scouse Camp, " 



79 



29 



72 



53 



+ 112 06 



" " 





8 



Potato Camp, " 



79 



04 



72 



30 



+ 105 34 



" " 





9 



Camp Separation, " 



78 



53 



72 



08 



+ 105 04 



II II 





10 



Last Camp, " 



78 



38 



72 



08 



+ 108 36 



II II 





11 



Port Foulke, Smith Strait, 



78 



18 



73 



00 



+ 111 40 



July " 



H. G. Radcliff 



12 



Northumberland Island, 



Whale Sound, 



77 



11 



72 



20 



+ 106 00 



Aug. " 





13 



Netlik, 



77 



08 



71 



22 



+ 106 49 



II II 



H. G. Radcliff & ") 

 S. J. M'Cormick j 



















14 



Upernavik, N. Greenland, 



72 



47 



56 



03 



+ 72 12 





H. G. Radclilf 



