

PART I. ON MAGNETIC STORMS. CHAP. III. 249 



Current-Arrows for the 31st October, 1902; Chart XV at 20 h 30 m , and Chart XVI at 21 h 45 m .(') 





1 1!-.' 



si 



, 



: ' 



m 



7 



' 



Oilh Outlaid 



CfcCh Otmtflu 

 D)i D Drtra I' 



,-** AMd 



Si li Slfuhunl 



Tuiis nv> 







[^ / 







s* 



;- 



Bih 5wb>/i 



Qilh Cntliaika* 



Oi Ch Qvui.j-uir, 



DhD D An Dun 



' 



; -*v^ 



T 



Zkw b-Ad-jH 



Fig. 114. 



