MAGNETIC SUTJVEY OF JAPAN FOP. TTTE EPOCTI 1890.0. 13') 



TABLE XXI. 



Vertical Variations of Magnetic Elements in 

 Ja p a n . 



—-per kilom. -o.'35 -o.'22 -o'2i -0:27 -o.'29 



dz 



-^per kilom. -o.'oi +o.'oi +0.02 +0.01 +o'oi 



dz ^ 



* Since Z is negative upward, + correction means upward diminution in the intensity of Z. 



