connection between earth-current and force of earth-mag-netism. 



Cherrbon - B<7ftwta 

 yon, -pp/aj~i^uuj / ijiC't'fiHh- 

 JÊ nxm, - 26 -J x 10 " VoU . Km . 



M'tynelic. CompoTvenJ X 



I mm - 1 -'i f 



Cheribon -JSaLityia 

 '•oUrising Copper- carlh 

 I mm =2$.i. VoU.JCn. 



on* hour = 230 m rn- 



SepL 4^ 1907. 



4h 



ll . f "'' * ». »Soeraluti/a-BalaiHa 



M'lidl i 



%A I m m '"23x10 "* VoU Am 



R'tfor/ia -Artyer 

 J mm ' !tiO> IV* VoU. JCm 



l''S6"'18'a.m..Ba^.Ttme 



S*pl.20^l$07. 



