xlvi 



Inteoduction. 







Table 21 



. — Observations for 



Magnetic Dip in different Azimuths. 







^ 



B Dipping. 



A. Dipping. 







Limb E. 





Limb W. 





Limb E. 





Limb W. 





^ 



























M 1 





Pace of Needle 



Face of Needle 



Face of Needle 



Face of Needle 







E. 



w. 



E. 



W. 



E. 



W. 



E. 



W. 



o 



o 



o 



/ 



o 



O 



/ 



o 



o 



' 



o 



o 



. 







, 







73 7-0 



69 



39-5 



107 20-5 



110 



48-0 



70 10-0 



73 



31-5 



no 29-0 



106 



56-0 



71 



21-81 



30 



75 3-0 



71 



38-5 



104 54-5 



109 



10 



72 120 



76 



2-0 



108 31-0 



104 



23-5 



73 



30-69 



120 



101 44-5 



98 



3-0 



78 31-5 



82 



10.0 



97 320 



101 



40-5 



82 49-0 



78 



54-5 



80 



25-62 



60 



82 22-0 



78 



190 



97 54-0 



101 



51-0 



78 54-5 



82 



55-0 



101 400 



97 



24-0 



80 



27-69 



150 



109 200 



104 



54-5 



71 19-0 



74 



540 



104 34-0 



108 



260 



75 48-0 



72 



190 



73 



23-19 







73 35-5 



69 



19-0 



107 8-0 



111 



19-5 



70 1-0 



73 



38-0 



110 310 



106 



460 



71 



21-12 



15 



73 55-0 



69 



43-0 



106 310 



111 



00 



70 31-5 



74 



10-0 



110 90 



106 



220 



71 



4719 



30 



75 38-0 



70 



390 



104 260 



110 



4-0 



72 5-0 



75 



58-0 



108 48-0 



104 



33-5 



73 



18-56 



45 



79 9-0 



73 



40-0 



101 17-0 



106 



38-0 



74 560 



78 



57-0 



105 39-0 



101 



31-0 



76 



27-12 



60 



83 120 



77 



39-0 



97 7-0 



102 



54-0 



78 44-0 



83 



0-0 



101 54-0 



97 



18-0 



80 



25-25 



75 



87 56-0 



82 



19-5 



92 30-0 



98 



16-0 



83 12-5 



87 



21-5 



97 230 



93 



5-5 



84 



56-87 



90 



93 85 



87 



15-5 



87 22-0 



93 



10-5 



87 58-0 



92 



19-0 



92 30-0 



88 



4-5 



89 



46-50 



105 



98 14-0 



92 



260 



82 24-0 



87 



58-0 



92 59-0 



97 



170 



87 27-5 



83 



12-5 



85 



0-75 



120 



102 49-0 



97 



12-0 



77 460 



83 



110 



97 6-0 



101 



51-0 



83 2-0 



78 



42-5 



80 



27-94 



135 



106 42-0 



101 



21-0 



72 51-0 



79 



90 



101 260 



105 



40-0 



78 57-0 



74 



53-0 



76 



20-12 



150 



110 2-5 



104 



300 



70 500 



. 75 



42-5 



104 26-5 



108 



49-5 



76 1-0 



72 



10 



73 



20-75 



165 



111 30 



106 



34-0 



69 44-0 



74 



0-0 



106 19-0 



110 



0-0 



74 10-5 



70 



24-5 



71 



47-87 



Table 22. — Magnetic Dip deduced from the Observations in Table 23. 



Azimuths. 



ri. 



»i . 



6. 



o o 



, 



o 



o 



30 and 120 



73 30-69 



80 25-62 



71 110 



60 -■• 150 



80 27-69 



73 23-19 



71 5-9 











71 21-8 



and 90 



71 21-12 



89 46-50 



71 20-9 



15 --- 105 



71 47-19 



85 0-75 



71 11-9 



30 -.. 120 



73 18-56 



80 27-94 



71 2-1 



45 •-. 135 



76 27-12 



76 20-12 



71 6-5 



60 •-. 150 



80 25-25 



73 20-75 



71 2-6 



75 ■•• 165 



84 56-87 



71 47-87 



21 11-9 



In the first series, giving the observation at Azimuth 0° a value 

 = 71° 12'.9 ; Correction for Needle No. 1 = - 8'-9 

 in the second series, 



6 = 71° 9'.3 ; Correction for Needle No. 1 = - ll'-8 



In the Abstracts of Magnetic Dip the observations have been corrected by — 12'. 



