66 



OBSERVATIONS TO DETERMINE THE MAGNETIC DIP 



Needle No. 1. 



Azi- 

 muth. 





 180 



10 

 190 

 100 



280 



20 

 200 

 110 

 290 



30 

 210 

 120 

 800 



40 

 220 

 130 

 310 



Poles direct. 



72°26'.4 

 72 51 .9 



72 40 .2 



73 11 .0 

 86 9 .5 

 86 52 .4 



73 24 .6 



73 52 .3 

 84 13 .6 

 83 49 .8 



74 36 .1 



75 4 .4 



81 20 .1 



81 1 .8 



76 18 .8 

 76 47 .1 

 78 57 .8 

 78 31 .1 



Poles reversed. 



Mean. 



72°37'.8 

 73 6 .3 



72 54 .9 



73 24 

 87 18 .9 

 86 35 .8 



■11 



73 30 .0 



74 3 .7 

 84 32 .8 

 83 38 .8 



74 44 .6 



75 19 .7 

 81 35 .1 

 81 13 



76 3 



77 4 

 79 12 .4 



78 25 .8 





72°45'.6 



73 2 .7 

 86 44 .2 



73 42 .7 

 84 3 .8 



74 56 .2 

 81 17 .6 



76 40 

 78 46 



Dip deduced. „ f, 'C I Poles direct. Poles reversed. 



} 



72°45'.6 



72 46 .1 



72 46 .1 



72 47 .7 



72 49 .8 



50 

 230 

 140 

 320 



60 

 240 

 150 

 330 



70 

 250 

 160 

 340 



80 

 260 

 170 

 350 



78°23'.5 

 78 49 .0 

 76 47 .0 

 76 23 .5 



81 9 .7 

 81 18 .5 

 75 3 .5 



74 40 ,8 74 46 .6 



83 42 .7 



84 5 .7 

 73 58 .0 

 73 29 .0 



86 45 .7 



87 2 .6 

 73 9 .2 

 72 42 .3 



78=30'. 8 



79 19 .7 

 77 3 .6 

 76 22 .8 



80 57 .2 



81 42 .1 

 75 24 .0 



83 34 .3 



84 21 .9 

 74 7 .1 

 73 34 .2 



•86 31 .1 

 87 17 .4 

 73 21 .7 



72 49 .8 



Mean. 



Dip deduced. 



78°45' 



.8 



76 39 



.2 



81 16 



.9 



74 58 



.7 



83 56 



.2 



73 47 



.1 



86 54 



.2 



73 



.8 



72°48'.4 



72 49 .5 



72 47 .8 



72 45 .8 



General mean, 72° 47'. 4 



Needle No. 2. 



Azi- 

 muth. 







180 



10 

 190 

 100 

 280 



20 

 200 

 110 

 290 



Poles direct. 



30 

 210 

 120 

 300 



40 

 220 

 130 

 310 



Poles reversed. 



Mean. 



72° 57'. 8 72°32'.7: 

 72 56.4 73 7.0 



73 14 .5 



73 17 .9 



87 8 .6 



86 39 .4 



73 



74 

 84 

 83 



54.4 



4.2 



10.5 



58.5 



74 55 .2 



75 20 .9 

 81 19 .2 

 80 56.4 



76 51 .2 

 76 57.9 

 79 11.7 

 78 40.9 



72 45.8? 



73 20.35 

 87 18.3? 

 86 41 .35 



73 29 .3 I 



73 55 .8 S 



84 28.8) 



83 50 .6 S 



74 31 .4 



75 8 

 81 28 .2 

 80 52.4 



a 



76 6.4 

 76 56.1 

 79 8.6 

 78 26.3 



72° 53 '.5 



73 9.7 



86 56.9 



73 50 .9 

 84 7.1 



74 59.0 

 81 9.1 



76 43.4 



78 51 .9 



} 



Dip deduced. 



72° 53'. 5 



72 55.0 



72 54 .8 



72 46.6 



72 55.1 



50 

 230 

 140 

 320 



60 

 240 

 150 

 330 



70 

 250 

 160 

 340 



80 

 2G0 

 170 

 350 



Poles direct. 



78° 

 79 

 77 

 76 



45'.2 



14.0 



0.0 



58.8 



Poles reversed. 



80 54.2 



81 13.8 

 75 21 .6 

 74 59.7 



83 56.7 



83 57.1 



74 3.7 



73 47.9 



86 

 87 

 73 

 73 



37 



.5 



86 



1 



A 



87 



14 



.5 



73 



13 



.3 



72 



78° 

 79 

 76 

 76 



80 51 



81 25 

 75 10.4 

 74 35.2 



83 43 



84 23 

 74 1 .7 

 73 29 .9 



■.n 



41 .51 

 12.33 

 16.7? 

 44.1 \ 



Mean. 



78° 52'.9 

 76 48.2 



81 6.2 

 75 



6.2"! 

 1.8 J 



84 0.1 



73 50 .8 



86 53.2 



73 7.2 



Dip deduced. 



72° 59'.3 



72 47 .2 



72 52.6 



72 51 .9 



General mean, 72° 52'. 9 



