( 315 ) 



Station 



Hor. vector moves in diaerram : 



Vertical component shows: 

 Max. Min. 



Kingua Fjord 

 Godtliaab 



clüfkwise 



Evcnins; 



Mornina; 



anticlockwise, but 



clockwise in the 



evening. 



Cape Thordsen 

 Jan Mayen 

 Ssagastyr 

 Fort Rae 

 Point Barrow 

 Nova Zembla 

 Bossekop 



anticlock- 

 wise. 



Evening Morning 



At S?agaslyr ~ untlirusty. 



At Nova Zembla two maxima and 



two minima, c tends to disappear. 



At Point Barrow and Bossekop the 



fluctuation is the contrary and shows 



a max. in the morning and a 



min. in the evening. 



Sodankyla 



anticlockwise, but 

 clockwise in the 

 mo rni ng .TheE/W 

 compon. tends to 

 disappear. 



Evening 



Pawlowsk 

 Greenwicli 



clockwise 



Morning 



Morning 



Evening 



Tiflis 



Washington 



clockwise, but 



anticlockwise in 



the evenins;. 



Morninff 



Evening. 



Zi-Ka-Wei 



No change 

 in direction, 

 which stays 

 WSW-ENE. 



Morning 



Batavia 



anticlockwise, but 



clockwise in the 



evening 



Noon 



Evening 



Mornins 



Soutli Georgia / 

 Cape Hoorn ) 



clockwise 



Morning 



Evening 



The c-hange iji (lie sense of rotation of the liorizontal vector and 

 in the times of occnrrence of niaxinmni and niiniinnin of the verlieal 

 comj)onent proceeds (|nile regnlarl\ , when classifying the stations, 

 as lias been done here, h\ tlieir distance from a pole, which may 

 be called pole of anrora borealis and is located in ± ÖU°.5 K and 

 ± 80"= W. 



Now it is I'emarkable that in my paper on the "Erdniagnetischc 

 Nachstch-nng", (pioled above, I came to the resnlt, that the distnrbing 

 force acts in j)lanes, \vhich cut tlie surface of the eartli along curves 

 converging into this pok'. 



In order to study the Itehaxiour of the horizontal componeid tlie 



