— 247 — 



clockwise, i. e. in the same direction, which is preponclerant 

 in the daily diagram of the disturbing vector. This points to 

 the existence of disturbing* vcctors during such days as are 

 considered to be undisturbed. 



These hourly values, mentioned above, expressed in o.OUOOl 

 C.G.S. are: 



Honr 



HdD 

 dH 



0.1 



8 



3 4 



-0.4-1.1 



0.3 



■2.01-1.2-1. l|-0.5-1.6-2.9;-2 1 



0.; 



0.1 



8 9 



1.3 2.1 



-1.1 0.9 2..5 



10 11 



2.5 



0.8 

 0.5 



Noon 



1.2 



0.9 



In his paper on the daily inequality of magnetic elements ^) 

 Dr. FiniscHE lias extended his computation of the potential- 

 function over the polar regions indeed, but I think his results 

 for tliese parts of the globe are not trustworthy. He makes 

 iise of the data for arctic stations calculated for all days, 

 taking the average daily inequality for these stations, divitled 

 into two groups. viz. PoUiem, Cape Thordsen, Ssafjasfi/r, 

 Karmahd, Point Barroiv , and Jan Mayen, Bosseko^), Kimjiia 

 Fjord, Fort Rae. 



That which has been found in this paper witli regard to 

 the disturbing phenomenon, makes it evident, that daily 

 inequality derived in this nianner is soinething else for aictic 

 and for non-arctic stations, the former deviating strongly 

 from what is understood to be true solar diurnal ineciuality, 

 the latter approaching it closely. 



' ) Die taglichi' Periode der crdinag'neti.''chen Eleuientc 

 St. rdershuni 1902. 



