138 A. TANAKADATE. 



TABLE XXIV. 



Data for the Calculation of Vertical Variation of Magnetic Elements in 



Great Br it a i n . 



T. in. V. yil. IX. 



yîWofGr. 4° ^1-5 2° 05 .'9 7° 37-9 3° 08.0 4° 32:6 



f 56°3S.'2 53° 24:2 54° 02:7 51° 05:3 51° 41-9 



TT T " T "' y 



a 16011 17313 16761 18206 17863 



20"^ 58.4 i8°5i.'8 22° 03:9 18° 38:4 I9°35.'5 

 ^ -70° 57-3 -68° 53:6 -69° 52:6 -67° 32:1 -68° 05:2 



X 14950' 163S4' 15534^ 17-52' 16829"^ 



Y 5731 5598 6296 5819 5990 



z -46381 -44853 -45744 -44030 -44403 



1 49069 48078 48717 47645 47863 



