100 Rev. Mr Scoresby on the Uniform PermeaUUty 



IS 



Q 



Comparative 

 Influence of 

 each Pole. 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



Relation of the 

 Forces acting on 

 the Compass. 



General resultant, 

 or actual Comp. . 

 influence. 



25 



30 



35 



40 



45 



50 



* = 400 ^ 



^ = 4Jll 



^ = 4^1 



* — 629 ^ 



^^ = ■41 



* "^1296* 



"^ = 16C0 L 



= — i 

 1681 -^ 



^^ = 2(151 



* = 2ll6' 



^~250ol 

 '' — ofini ' 



J 



225 



256 



1 _ 

 289 



1 

 32i" 



1 

 36T" 



1 



400" 



J^_ 

 441" 



_L- 



484" 



J_ 



529" 



1 

 576" 



1 

 625 



l_ 



900 



_ _1 



~ I225 



Ratio of resulUnt reduced. 



1600 



1 

 2025 



1 

 256 



1 



289 



1 

 324 



361 



1 



400 



\_ 

 441 



1 



484 



1 



"529 



1 



" 576 



1 



"625 



'676 



1 



"961 



1 

 "1296 



1_ 



1681 



1 

 "2116 



31 

 57600 



33 



73984 



35 

 93636 



37 



To the relation 

 R, being = 1. 



116964 



39 

 144400 



41 



176400 



43 



213444 



45 

 256036 



47 



304704 



49 



360000 



51 

 422500 



61 

 864900 



71 



1 jU 



2500 2601 



1587600 



81 



2689600 



91 



4284900 



101 



31 



43200 



33 



55488 



6502500 



35 

 70227 



37 

 87723 



39 

 108300 



41 

 132300 



43 

 160083 



45 

 192027 



47 

 228528 



49 

 270000 



51 

 316875 



61 

 648675 



71 

 1190700 



81 

 2017200 



91 

 3213675 



4876875 



To the rela- 

 tion of 1.0 

 inversely. 



