434 



13IRKELANU. THE NORWEGIAN AURORA POLARIS EXPEDITION, igO2 1903. 



Fields of force for polar current-systems of the assumed form. 



g = ao A" = i8o. A V= 0,349 ' 



Fig. 1 80. 



20, A," = 270. A y= 0,436 i. 



Fig. 181. 



