THE NORWEGIAN 



AURORA POLARIS EXPEDITION 



1902-1903 



VOLUME I 



ON THE CAUSE OF MAGNETIC STORMS AND 

 THE ORIGIN OF TERRESTRIAL MAGNETISM 



BY 

 KR. BIRKELAND 



SECOND SECTION 



THE NORWES1AH STATIONS 

 1902-1903 



LEIPZIG 



JOHANN AMBROSIUS BARTH 



CHRISTIANIA 



H. ASCHEHOUG & CO. 



LONDON, NEW YORK 



LONGMANS, GREEN & CO. 



PARIS 

 C. KLINCKSIECK 



