l:o. The first result is that there exists, at least in 

 the polar-regions, a current from the atmosphere to the 

 earth, which however often changes its sign. 



2:o. The EMF of this current can be measured by a 

 point-apparatus in connexion with a galvanometer, which 

 on the other side is connected with the earth by means of 

 an earth-plate (zink amalg.) 



3:o. The value of the EMF of the current from the 

 atmosphere can be measured by a comparison with the 

 known EMF of one or several galvanic elements, introduced 

 in the circuit in opposite directions. It is however neces- 

 sary, especially in times of great variations, to diminish as 

 much as possible the effect of the current from the atmo- 

 sphere and increase that of the elements, to eliminate the 

 effect of the variations. 



4:o. The current of the atmosphere is subject to nearly 

 continual variations, which however do not surpass certain 

 limits at least in the regions, where the observations have 

 been made hitherto. 



5:o. A comparison between the curves, which repre- 

 sent the observations during the common ,,jour termes" in 

 Sodankylä and Kultala, shows that the current of the at- 

 mosphere depends on the latiiude and is much more variable 

 in the southern station Sodankylä than in Kultala; the li- 

 mits of the variations being even greater at the former sta- 

 tion. It seems most probable that the above mentioned 

 maximum-belt of the polarlight is also here determinating. 

 Sodankylä lies in the southern börder auf the belt and Kul- 

 tala 1° 5', 5 more to the norlh; the variations seem to in- 

 crease in number and intensity at the south bord of the 

 belt. As the observations on the el. air-current are limited 

 to this two stations, the conclusions can not have at pre- 

 sent a general character. 



6:o. Regarding the dependance of the current from 

 the atmosphere of the aurora, it will be clearly seen from 

 the published curves, that every time an aurora appears, 

 the variations in the current increase both in number and 



